Acta Physica Sinica //www.getgobooth.com/ 必威体育下载 daily 15 2024-08-20 10:33:35 apsoffice@iphy.ac.cn apsoffice@iphy.ac.cn 2024-08-20 10:33:35 zh Copyright ©Acta Physica Sinica All Rights Reserved. 京ICP备05002789号-1 Address: PostCode:100190 Phone: 010-82649829,82649241,82649863 Email: apsoffice@iphy.ac.cn Copyright ©Acta Physica Sinica All Rights Reserved apsoffice@iphy.ac.cn 1000-3290 <![CDATA[]]> //www.getgobooth.com/en/article/doi/10.7498/aps.51.1 Author(s): Li Ren-Jie, Qiao Yong-Fen, Meng Jun <br/><p>Inthispaper,theGibbs Appell (G A)equationsforvariablemassholonomicsystemswereestablished ,thenthedefinitionandcriterionoftheforminvarianceofG Aequationsundertheinfinitesimaltransformationsofgroupsweregiven .Next,acon servedquantitycanbededucedbyusingthisforminvarianceundercertainconditions,andanexamplewasgiven</p> <br/>Acta Physica Sinica. 2002 51(1): 1-5. Published 2005-04-11 Author(s): Li Ren-Jie, Qiao Yong-Fen, Meng Jun <br/><p>Inthispaper,theGibbs Appell (G A)equationsforvariablemassholonomicsystemswereestablished ,thenthedefinitionandcriterionoftheforminvarianceofG Aequationsundertheinfinitesimaltransformationsofgroupsweregiven .Next,acon servedquantitycanbededucedbyusingthisforminvarianceundercertainconditions,andanexamplewasgiven</p> <br/>Acta Physica Sinica. 2002 51(1): 1-5. Published 2005-04-11 Li Ren-Jie, Qiao Yong-Fen, Meng Jun 2005-04-11 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 1-5. article doi:10.7498/aps.51.1 10.7498/aps.51.1 Acta Physica Sinica 51 1 2005-04-11 //www.getgobooth.com/en/article/doi/10.7498/aps.51.1 1-5 <![CDATA[]]> //www.getgobooth.com/en/article/doi/10.7498/aps.51.6 Author(s): Liu Tian-Gui, Yan Jia-Ren, Pan Liu-Xian <br/><p>Inthispaper,inafirst orderapproximation ,weobtaintheeffectsofperturbationsonastationarysolitonforTDGLE (timedependentginzburg landauequation) .Namely ,weobtainthesolitonparametervariationandthegeneralexpressionofthefirst or dercorrection .Atthesametime,wegivetheexactexpressionofaspecialexample</p> <br/>Acta Physica Sinica. 2002 51(1): 6-9. Published 2005-04-11 Author(s): Liu Tian-Gui, Yan Jia-Ren, Pan Liu-Xian <br/><p>Inthispaper,inafirst orderapproximation ,weobtaintheeffectsofperturbationsonastationarysolitonforTDGLE (timedependentginzburg landauequation) .Namely ,weobtainthesolitonparametervariationandthegeneralexpressionofthefirst or dercorrection .Atthesametime,wegivetheexactexpressionofaspecialexample</p> <br/>Acta Physica Sinica. 2002 51(1): 6-9. Published 2005-04-11 Liu Tian-Gui, Yan Jia-Ren, Pan Liu-Xian 2005-04-11 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 6-9. article doi:10.7498/aps.51.6 10.7498/aps.51.6 Acta Physica Sinica 51 1 2005-04-11 //www.getgobooth.com/en/article/doi/10.7498/aps.51.6 6-9 <![CDATA[]]> //www.getgobooth.com/en/article/doi/10.7498/aps.51.10 Author(s): Liu Shi-Kuo, Fu Zun-Tao, Liu Shi-Da, Zhao Qiang <br/><p>InthispapertheJacobiellipticfunctionexpansionmethodisextendedtothefiniteexpansionfortheappliedJacobicosineellipticfunctionorthethirdkindofJacobiellipticfunctiontoconstructthenewperiodicsolutionsofnonlinearwaveequations.Theperiodicsolutionsobtainedbythismethodcanbereducedtothesolitarywavesolutionsunderthelimitcondition.</p> <br/>Acta Physica Sinica. 2002 51(1): 10-14. Published 2005-04-11 Author(s): Liu Shi-Kuo, Fu Zun-Tao, Liu Shi-Da, Zhao Qiang <br/><p>InthispapertheJacobiellipticfunctionexpansionmethodisextendedtothefiniteexpansionfortheappliedJacobicosineellipticfunctionorthethirdkindofJacobiellipticfunctiontoconstructthenewperiodicsolutionsofnonlinearwaveequations.Theperiodicsolutionsobtainedbythismethodcanbereducedtothesolitarywavesolutionsunderthelimitcondition.</p> <br/>Acta Physica Sinica. 2002 51(1): 10-14. Published 2005-04-11 Liu Shi-Kuo, Fu Zun-Tao, Liu Shi-Da, Zhao Qiang 2005-04-11 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 10-14. article doi:10.7498/aps.51.10 10.7498/aps.51.10 Acta Physica Sinica 51 1 2005-04-11 //www.getgobooth.com/en/article/doi/10.7498/aps.51.10 10-14 <![CDATA[]]> //www.getgobooth.com/en/article/doi/10.7498/aps.51.15 Author(s): Zhang Quan, Tang Chao-Jing, Gao Feng <br/><p>Quantumerrorcorrectioncodingtechnologyisofgreatimportanceforquantumcommunicationaswellasquantumcomputa tion .Nearlyalloftheclassicalerrorcorrectioncodingschemeshave ,forthetimebeing,beentransplantedtothedomainofquantuminformation ;nevertheless,themostoutstandingschemeinclassicalcodingregion ,turbocode ,stilllacksthequantumanalo gytillnow .Wehavecompletedasimpleschemeofquantumrecursivesystematicconvolutionalcodebymeansofquantumregisternetwork .Atthesametime,akindofefficientquantuminterweaverisconstructedusingonlyquantumSWAPgates.AlsoaseriallyconcatenatedquantumTurbocodeisdevelopedbyanalogytotheclassicalTurbocode .Aslimitedbythequantumnon -cloningtheorem ,theproposedquantumturbocodeisseriallyconcatenated .Quantumturbocodemaynotonlyextendtheresearchareaofquantumerrorcorrectioncodingtechnology,butalsosolvethepuzzleinclassicalcodingtheory.</p> <br/>Acta Physica Sinica. 2002 51(1): 15-20. Published 2005-04-11 Author(s): Zhang Quan, Tang Chao-Jing, Gao Feng <br/><p>Quantumerrorcorrectioncodingtechnologyisofgreatimportanceforquantumcommunicationaswellasquantumcomputa tion .Nearlyalloftheclassicalerrorcorrectioncodingschemeshave ,forthetimebeing,beentransplantedtothedomainofquantuminformation ;nevertheless,themostoutstandingschemeinclassicalcodingregion ,turbocode ,stilllacksthequantumanalo gytillnow .Wehavecompletedasimpleschemeofquantumrecursivesystematicconvolutionalcodebymeansofquantumregisternetwork .Atthesametime,akindofefficientquantuminterweaverisconstructedusingonlyquantumSWAPgates.AlsoaseriallyconcatenatedquantumTurbocodeisdevelopedbyanalogytotheclassicalTurbocode .Aslimitedbythequantumnon -cloningtheorem ,theproposedquantumturbocodeisseriallyconcatenated .Quantumturbocodemaynotonlyextendtheresearchareaofquantumerrorcorrectioncodingtechnology,butalsosolvethepuzzleinclassicalcodingtheory.</p> <br/>Acta Physica Sinica. 2002 51(1): 15-20. Published 2005-04-11 Zhang Quan, Tang Chao-Jing, Gao Feng 2005-04-11 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 15-20. article doi:10.7498/aps.51.15 10.7498/aps.51.15 Acta Physica Sinica 51 1 2005-04-11 //www.getgobooth.com/en/article/doi/10.7498/aps.51.15 15-20 <![CDATA[]]> //www.getgobooth.com/en/article/doi/10.7498/aps.51.21 Author(s): Zhao Ren, Zhang Chun-Li <br/><p>Byusingthemethodofquantumstatistics,wedirectlyderivethepartitionfunctionofthebosonicandermionicfieldonblackplaneandobtaintheintegralexpressionoftheblackplane’sentropy,whichavoidsthedifficultyinsolvingthewaveequationofvariousparticles.Thenviatheimprovedbrick -wallmethod,membranemodel,wecalculatetheblackplane’sentropyandfindoutthatifwelettheintegralupperandlowerlimitsbothtendtothehorizon ,theentropyoftheblackplaneisproportionaltotheareaofhorizon.Inourresult,thestrippedtermandthedivergentlogarithmictermintheoriginalbrick -wallmethodnolongerexist.Inthewholeprocess,wedonottakeanyapproximation .Weofferanewsimpleanddirectwayofcalculatingtheentropyofdifferentcomplicatedblackholes.</p> <br/>Acta Physica Sinica. 2002 51(1): 21-24. Published 2005-04-11 Author(s): Zhao Ren, Zhang Chun-Li <br/><p>Byusingthemethodofquantumstatistics,wedirectlyderivethepartitionfunctionofthebosonicandermionicfieldonblackplaneandobtaintheintegralexpressionoftheblackplane’sentropy,whichavoidsthedifficultyinsolvingthewaveequationofvariousparticles.Thenviatheimprovedbrick -wallmethod,membranemodel,wecalculatetheblackplane’sentropyandfindoutthatifwelettheintegralupperandlowerlimitsbothtendtothehorizon ,theentropyoftheblackplaneisproportionaltotheareaofhorizon.Inourresult,thestrippedtermandthedivergentlogarithmictermintheoriginalbrick -wallmethodnolongerexist.Inthewholeprocess,wedonottakeanyapproximation .Weofferanewsimpleanddirectwayofcalculatingtheentropyofdifferentcomplicatedblackholes.</p> <br/>Acta Physica Sinica. 2002 51(1): 21-24. Published 2005-04-11 Zhao Ren, Zhang Chun-Li 2005-04-11 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 21-24. article doi:10.7498/aps.51.21 10.7498/aps.51.21 Acta Physica Sinica 51 1 2005-04-11 //www.getgobooth.com/en/article/doi/10.7498/aps.51.21 21-24 <![CDATA[]]> //www.getgobooth.com/en/article/doi/10.7498/aps.51.25 Author(s): Cao Zhi-Jue <br/><p>Dynamicdescriptionisgivenofthephenomenaofdropletcondensation .Thechangeofthechemiclpolentialisdiscussedfortwotypesofliquiddroplets.TheconditionfortheBrownaggregationtooccurisalsoobtained .Combiningallthesewiththedropoffradius,theoptimalcomtactanglecanthenbedetermined.</p> <br/>Acta Physica Sinica. 2002 51(1): 25-30. Published 2005-04-11 Author(s): Cao Zhi-Jue <br/><p>Dynamicdescriptionisgivenofthephenomenaofdropletcondensation .Thechangeofthechemiclpolentialisdiscussedfortwotypesofliquiddroplets.TheconditionfortheBrownaggregationtooccurisalsoobtained .Combiningallthesewiththedropoffradius,theoptimalcomtactanglecanthenbedetermined.</p> <br/>Acta Physica Sinica. 2002 51(1): 25-30. Published 2005-04-11 Cao Zhi-Jue 2005-04-11 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 25-30. article doi:10.7498/aps.51.25 10.7498/aps.51.25 Acta Physica Sinica 51 1 2005-04-11 //www.getgobooth.com/en/article/doi/10.7498/aps.51.25 25-30 <![CDATA[]]> //www.getgobooth.com/en/article/doi/10.7498/aps.51.31 Author(s): Xu Xiu-Lian, Wang Feng, Zhang Feng-Shou, Zeng Xiang-Hua <br/><p>Usingthedistance dependenttight bindingmoleculardynamicsmodel(DDTB MD) ,theNa6 (2D) +Na8,Na6 (3D) +Na8collisiondynamicprocesseshavebeenstudiedfordifferentincidentenergiesanddifferentimpactparameters.Differentreactionmechanismshavebeenobserved ,suchasfusionreaction ,deepinelasticandquasi elasticcollisions,whicharesimilartothenuclearheavy ioncollisions.Thisshowsthattheclusterswithdifferentgeometricstructurescollidingwithidenticalclusterscanproducedifferentnewclusters.Atlowerincidentenergycentralcollisions,Na6 (3D)canformastablecluster;atleV nhalfcentralcollision ,Na6 (3D)iseasytoformalargercluster.</p> <br/>Acta Physica Sinica. 2002 51(1): 31-35. Published 2005-04-11 Author(s): Xu Xiu-Lian, Wang Feng, Zhang Feng-Shou, Zeng Xiang-Hua <br/><p>Usingthedistance dependenttight bindingmoleculardynamicsmodel(DDTB MD) ,theNa6 (2D) +Na8,Na6 (3D) +Na8collisiondynamicprocesseshavebeenstudiedfordifferentincidentenergiesanddifferentimpactparameters.Differentreactionmechanismshavebeenobserved ,suchasfusionreaction ,deepinelasticandquasi elasticcollisions,whicharesimilartothenuclearheavy ioncollisions.Thisshowsthattheclusterswithdifferentgeometricstructurescollidingwithidenticalclusterscanproducedifferentnewclusters.Atlowerincidentenergycentralcollisions,Na6 (3D)canformastablecluster;atleV nhalfcentralcollision ,Na6 (3D)iseasytoformalargercluster.</p> <br/>Acta Physica Sinica. 2002 51(1): 31-35. Published 2005-04-11 Xu Xiu-Lian, Wang Feng, Zhang Feng-Shou, Zeng Xiang-Hua 2005-04-11 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 31-35. article doi:10.7498/aps.51.31 10.7498/aps.51.31 Acta Physica Sinica 51 1 2005-04-11 //www.getgobooth.com/en/article/doi/10.7498/aps.51.31 31-35 <![CDATA[]]> //www.getgobooth.com/en/article/doi/10.7498/aps.51.36 Author(s): Zhang Xiang-Yang, Li Yong-Fang, Sun Jian-Feng, Wang Yong-Chang <br/><p>WepresentanewQuasi Λ model four levelsystembasedonageneralthree levelΛ modelandinvestigatetheresonantfluorescencespectroscopyindetail.Therearethreeultra narrowspectrallinesinthespontaneousemissionspectrafromupperleveltolower lyinglevelsofthetwoemissionchannels,whichoccuroverawiderangeoftheparameters.Theappearanceofthethreeultra narrowspectrallinesiscloselyrelatedwithRabifrequencyofthetwocoherencedrivingfields;andthelargertheRabifrequency ,thenarrowerthelines.Theeffectoflinenarrowingdoesn’toccurwhenthereisonlyacoherencedrivingfield .Whiletheincoherenttransitionandthecollisionaldecaybetweentheenergylevelsdestroythefeatureofthespectralnarrowingwhichmaybeconsideredtobetheresultofthemulti channelquantuminterference.</p> <br/>Acta Physica Sinica. 2002 51(1): 36-41. Published 2005-04-11 Author(s): Zhang Xiang-Yang, Li Yong-Fang, Sun Jian-Feng, Wang Yong-Chang <br/><p>WepresentanewQuasi Λ model four levelsystembasedonageneralthree levelΛ modelandinvestigatetheresonantfluorescencespectroscopyindetail.Therearethreeultra narrowspectrallinesinthespontaneousemissionspectrafromupperleveltolower lyinglevelsofthetwoemissionchannels,whichoccuroverawiderangeoftheparameters.Theappearanceofthethreeultra narrowspectrallinesiscloselyrelatedwithRabifrequencyofthetwocoherencedrivingfields;andthelargertheRabifrequency ,thenarrowerthelines.Theeffectoflinenarrowingdoesn’toccurwhenthereisonlyacoherencedrivingfield .Whiletheincoherenttransitionandthecollisionaldecaybetweentheenergylevelsdestroythefeatureofthespectralnarrowingwhichmaybeconsideredtobetheresultofthemulti channelquantuminterference.</p> <br/>Acta Physica Sinica. 2002 51(1): 36-41. Published 2005-04-11 Zhang Xiang-Yang, Li Yong-Fang, Sun Jian-Feng, Wang Yong-Chang 2005-04-11 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 36-41. article doi:10.7498/aps.51.36 10.7498/aps.51.36 Acta Physica Sinica 51 1 2005-04-11 //www.getgobooth.com/en/article/doi/10.7498/aps.51.36 36-41 <![CDATA[]]> //www.getgobooth.com/en/article/doi/10.7498/aps.51.42 Author(s): Wei Ji-Lin, Zhang Li-Min, Yu Shu-Qin, Jiang Zhi-Peng <br/><p>WehavecalculatedtheintensitydistributioninthefocalregionofalaserbeamwithasuperGaussianprofiletruncatedbyacircularaperture.Usingthecalculatedtheoreticalionizationvolumeversusthelaserintensity ,themultipleionizationyieldsofatomsproducedbythetruncatedlaserbeamisstudied .Asanexample,theyieldsofmultiplychargedionsofxenonarecalculat edforfocusedintensitiesintherangeof1 0 1 3 to 1 0 1 6 W cm2 .OscillationsandsuppressionsintheyieldcurvesbecomeobviouslywiththeincreaseofthetruncationsofasupperGaussianbeam .Foralargen,suchasn &lt;2 ,orforstrongtruncations,suchasρa=1 ,ofthesupperGaussianbeam ,theshapeofmultipleionizationyieldsshowslessdependenceonn.Theseoscillationsandsuppressionsinthecalculatedyieldcurvesmaybeusedtoexplaintheexperimentalresultformultiplychargedionsofxenon.</p> <br/>Acta Physica Sinica. 2002 51(1): 42-48. Published 2005-04-11 Author(s): Wei Ji-Lin, Zhang Li-Min, Yu Shu-Qin, Jiang Zhi-Peng <br/><p>WehavecalculatedtheintensitydistributioninthefocalregionofalaserbeamwithasuperGaussianprofiletruncatedbyacircularaperture.Usingthecalculatedtheoreticalionizationvolumeversusthelaserintensity ,themultipleionizationyieldsofatomsproducedbythetruncatedlaserbeamisstudied .Asanexample,theyieldsofmultiplychargedionsofxenonarecalculat edforfocusedintensitiesintherangeof1 0 1 3 to 1 0 1 6 W cm2 .OscillationsandsuppressionsintheyieldcurvesbecomeobviouslywiththeincreaseofthetruncationsofasupperGaussianbeam .Foralargen,suchasn &lt;2 ,orforstrongtruncations,suchasρa=1 ,ofthesupperGaussianbeam ,theshapeofmultipleionizationyieldsshowslessdependenceonn.Theseoscillationsandsuppressionsinthecalculatedyieldcurvesmaybeusedtoexplaintheexperimentalresultformultiplychargedionsofxenon.</p> <br/>Acta Physica Sinica. 2002 51(1): 42-48. Published 2005-04-11 Wei Ji-Lin, Zhang Li-Min, Yu Shu-Qin, Jiang Zhi-Peng 2005-04-11 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 42-48. article doi:10.7498/aps.51.42 10.7498/aps.51.42 Acta Physica Sinica 51 1 2005-04-11 //www.getgobooth.com/en/article/doi/10.7498/aps.51.42 42-48 <![CDATA[]]> //www.getgobooth.com/en/article/doi/10.7498/aps.51.49 Author(s): Liang Hai-Chun, Rong Min-Zhi, Zhang Ming-Qiu, Zeng Han-Min <br/><p>Silvernanoparticleswithdifferentdiametersweresynthesizedbymicroemulsionmethod ,inwhichtheeffectoftolueneorcyclohexaneasanoilphaseontheparticlesizeanditsdistributionwasdetected .Silvernanoparticleswerenear spherical,bothmulticrystalsandtwinswereobserved.Latticedeformationsexistedindifferentdegreesbecausetheinterplanarspacedwasincreased.Thefluorescencespectrafordifferentsizesilvernanoparticlesdispersedinorganicsolventsweremeasured.Therearethreeemissionpeaksforsilvernanoparticles chloroformsystems,whilenofluorescenceemissionwasfoundwhensilvernanoparticlesdispersedintoluene .Thefluorescenceintensityvarieswithparticlesizeofthesilvernanoparticles,whichoriginatesfromAg2 ,Ag3 clustersonthesilverparticlesurfaceproducedbytheinteractionbetweensilverandchloroformunderUVradiation .Thereactivityandthenumberofsurfacereactivecentersvarywithsilverparticlesize,resultinginthedifferentfluorescencephenomena.</p> <br/>Acta Physica Sinica. 2002 51(1): 49-54. Published 2005-04-11 Author(s): Liang Hai-Chun, Rong Min-Zhi, Zhang Ming-Qiu, Zeng Han-Min <br/><p>Silvernanoparticleswithdifferentdiametersweresynthesizedbymicroemulsionmethod ,inwhichtheeffectoftolueneorcyclohexaneasanoilphaseontheparticlesizeanditsdistributionwasdetected .Silvernanoparticleswerenear spherical,bothmulticrystalsandtwinswereobserved.Latticedeformationsexistedindifferentdegreesbecausetheinterplanarspacedwasincreased.Thefluorescencespectrafordifferentsizesilvernanoparticlesdispersedinorganicsolventsweremeasured.Therearethreeemissionpeaksforsilvernanoparticles chloroformsystems,whilenofluorescenceemissionwasfoundwhensilvernanoparticlesdispersedintoluene .Thefluorescenceintensityvarieswithparticlesizeofthesilvernanoparticles,whichoriginatesfromAg2 ,Ag3 clustersonthesilverparticlesurfaceproducedbytheinteractionbetweensilverandchloroformunderUVradiation .Thereactivityandthenumberofsurfacereactivecentersvarywithsilverparticlesize,resultinginthedifferentfluorescencephenomena.</p> <br/>Acta Physica Sinica. 2002 51(1): 49-54. Published 2005-04-11 Liang Hai-Chun, Rong Min-Zhi, Zhang Ming-Qiu, Zeng Han-Min 2005-04-11 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 49-54. article doi:10.7498/aps.51.49 10.7498/aps.51.49 Acta Physica Sinica 51 1 2005-04-11 //www.getgobooth.com/en/article/doi/10.7498/aps.51.49 49-54 <![CDATA[]]> //www.getgobooth.com/en/article/doi/10.7498/aps.51.55 Author(s): Yang Bai-Fang, Miao Jing-Wei, Yang Chao-Wen, Shi Mian-Gong, Tang A-You, Liu Xiao-Dong <br/><p>TheyieldsofH~-,H ,H_2 ,H_2~ +andH_3 ~+forH_3~ +clusterspassingthroughcarbonfoilshavebeenmeasured .TheresultsshowedthatthechargeexchangeprocessintheinteractionofH3 +ionswithsolidsplaysakeyroleintheformationoftheseproducts.TheclustereffectsandwakeeffectsofH3 +ionsinsolidsarealsodiscussedindetail.</p> <br/>Acta Physica Sinica. 2002 51(1): 55-62. Published 2005-04-11 Author(s): Yang Bai-Fang, Miao Jing-Wei, Yang Chao-Wen, Shi Mian-Gong, Tang A-You, Liu Xiao-Dong <br/><p>TheyieldsofH~-,H ,H_2 ,H_2~ +andH_3 ~+forH_3~ +clusterspassingthroughcarbonfoilshavebeenmeasured .TheresultsshowedthatthechargeexchangeprocessintheinteractionofH3 +ionswithsolidsplaysakeyroleintheformationoftheseproducts.TheclustereffectsandwakeeffectsofH3 +ionsinsolidsarealsodiscussedindetail.</p> <br/>Acta Physica Sinica. 2002 51(1): 55-62. Published 2005-04-11 Yang Bai-Fang, Miao Jing-Wei, Yang Chao-Wen, Shi Mian-Gong, Tang A-You, Liu Xiao-Dong 2005-04-11 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 55-62. article doi:10.7498/aps.51.55 10.7498/aps.51.55 Acta Physica Sinica 51 1 2005-04-11 //www.getgobooth.com/en/article/doi/10.7498/aps.51.55 55-62 <![CDATA[]]> //www.getgobooth.com/en/article/doi/10.7498/aps.51.63 Author(s): Wang Wei, Huang Lan, Zhang Yu, Li Chang-Min, Zhang Hai-Qian, Gu Yu, Shen Hao-Ying, Chen Tang-Sheng, Hao Li-Ping, Peng Li, Zhao Li-Xin <br/><p>Singleelectrondeviceshavebeenpreparedbythemolecularself assemblytechniqueandtheirvoltage currentcharacteristicsmeasured .Ontheotherhand,singleelectrondeviceswerestudiedbytheMonteCarlosimulationbasedonasemi classicaltheoryofsingleelectronphenomena.Thesimulatdvoltage currentcurveissimilartothemeasuredone.Thisshowsthattheabovemethodmaybeusedtostudysingleelectrondevices.Furthermore ,thesimulatdresultsindicatethatthevoltage currentcharacteristicofasingleelectrondeviceisdeterminedonlybythesmallquantityofnanoparticlesinthelowvoltageregionthoughtherearealargenumberofnanoparticlesbetweenthetwoelectrodes.</p> <br/>Acta Physica Sinica. 2002 51(1): 63-67. Published 2005-04-11 Author(s): Wang Wei, Huang Lan, Zhang Yu, Li Chang-Min, Zhang Hai-Qian, Gu Yu, Shen Hao-Ying, Chen Tang-Sheng, Hao Li-Ping, Peng Li, Zhao Li-Xin <br/><p>Singleelectrondeviceshavebeenpreparedbythemolecularself assemblytechniqueandtheirvoltage currentcharacteristicsmeasured .Ontheotherhand,singleelectrondeviceswerestudiedbytheMonteCarlosimulationbasedonasemi classicaltheoryofsingleelectronphenomena.Thesimulatdvoltage currentcurveissimilartothemeasuredone.Thisshowsthattheabovemethodmaybeusedtostudysingleelectrondevices.Furthermore ,thesimulatdresultsindicatethatthevoltage currentcharacteristicofasingleelectrondeviceisdeterminedonlybythesmallquantityofnanoparticlesinthelowvoltageregionthoughtherearealargenumberofnanoparticlesbetweenthetwoelectrodes.</p> <br/>Acta Physica Sinica. 2002 51(1): 63-67. Published 2005-04-11 Wang Wei, Huang Lan, Zhang Yu, Li Chang-Min, Zhang Hai-Qian, Gu Yu, Shen Hao-Ying, Chen Tang-Sheng, Hao Li-Ping, Peng Li, Zhao Li-Xin 2005-04-11 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 63-67. article doi:10.7498/aps.51.63 10.7498/aps.51.63 Acta Physica Sinica 51 1 2005-04-11 //www.getgobooth.com/en/article/doi/10.7498/aps.51.63 63-67 <![CDATA[]]> //www.getgobooth.com/en/article/doi/10.7498/aps.51.68 Author(s): Zhou Chuan-Hong, Wang Lei, Nei Ya, Wang Zhi-Heng <br/><p>Guided moderesonanceinadielectricgratingresultsfromaredistributionofenergyinpropagatingwaveswhenhigh orderspatialharmonicsarecoupledtotheleakywave guidemodessustainedbythegrating.Inthispaper,wehaveanalyzedtheguided wavemodesinawaveguidewitharigorouscoupled waveapproach .Fromtheanalyzedresults,wehaveestimatedproperlythelocationoftheguided moderesonanceinaweaklymodulateddielectricgrating .Wealsodiscussedtherelationsamongtheguided moderesonance,gratinglayerthickness,substratethickness,andtheincidentangle.Byadoptingadesignforanti refection ,thesymmetricguided moderesonancewithlowsidebandwasachieved .</p> <br/>Acta Physica Sinica. 2002 51(1): 68-73. Published 2005-04-11 Author(s): Zhou Chuan-Hong, Wang Lei, Nei Ya, Wang Zhi-Heng <br/><p>Guided moderesonanceinadielectricgratingresultsfromaredistributionofenergyinpropagatingwaveswhenhigh orderspatialharmonicsarecoupledtotheleakywave guidemodessustainedbythegrating.Inthispaper,wehaveanalyzedtheguided wavemodesinawaveguidewitharigorouscoupled waveapproach .Fromtheanalyzedresults,wehaveestimatedproperlythelocationoftheguided moderesonanceinaweaklymodulateddielectricgrating .Wealsodiscussedtherelationsamongtheguided moderesonance,gratinglayerthickness,substratethickness,andtheincidentangle.Byadoptingadesignforanti refection ,thesymmetricguided moderesonancewithlowsidebandwasachieved .</p> <br/>Acta Physica Sinica. 2002 51(1): 68-73. Published 2005-04-11 Zhou Chuan-Hong, Wang Lei, Nei Ya, Wang Zhi-Heng 2005-04-11 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 68-73. article doi:10.7498/aps.51.68 10.7498/aps.51.68 Acta Physica Sinica 51 1 2005-04-11 //www.getgobooth.com/en/article/doi/10.7498/aps.51.68 68-73 <![CDATA[]]> //www.getgobooth.com/en/article/doi/10.7498/aps.51.74 Author(s): Chang Mei, Jin Ya-Qiu <br/><p>TheMuellermatrixsolutionofthevectorradiativetransferequationwithtimedependenceisderivedinthispaper.Itisappliedtothesimulationofpolarimetricbistaticscatteringfromalayerofrandomnon sphericalscatterersnonuniformlyorientedwhenaGaussianplanepulseisincidentuponit.Co polarizedandcrosspolarizedbistaticscatteringarenumericallycalculated .Thepulseechoesarecomparedwiththeincidentpulse.Wedemonstratethefunctionaldependenceofthepulseonthephysicalparametersofarandommedium ,suchasspatialorientationandfractionalvolumeofscatterers,incidenceangleandpolarization ,thelayerdepthetc.</p> <br/>Acta Physica Sinica. 2002 51(1): 74-83. Published 2005-04-11 Author(s): Chang Mei, Jin Ya-Qiu <br/><p>TheMuellermatrixsolutionofthevectorradiativetransferequationwithtimedependenceisderivedinthispaper.Itisappliedtothesimulationofpolarimetricbistaticscatteringfromalayerofrandomnon sphericalscatterersnonuniformlyorientedwhenaGaussianplanepulseisincidentuponit.Co polarizedandcrosspolarizedbistaticscatteringarenumericallycalculated .Thepulseechoesarecomparedwiththeincidentpulse.Wedemonstratethefunctionaldependenceofthepulseonthephysicalparametersofarandommedium ,suchasspatialorientationandfractionalvolumeofscatterers,incidenceangleandpolarization ,thelayerdepthetc.</p> <br/>Acta Physica Sinica. 2002 51(1): 74-83. Published 2005-04-11 Chang Mei, Jin Ya-Qiu 2005-04-11 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 74-83. article doi:10.7498/aps.51.74 10.7498/aps.51.74 Acta Physica Sinica 51 1 2005-04-11 //www.getgobooth.com/en/article/doi/10.7498/aps.51.74 74-83 <![CDATA[]]> //www.getgobooth.com/en/article/doi/10.7498/aps.51.84 Author(s): Wan Lin, Liu Su-Mei, Liu San-Qiu <br/><p>Inthispaper,thesqueezingeffectsofalightfieldintheT CmodelisstudiedbymeansofthequantumtheoryintheCounter Rotating Wave Approximation (C RWA) .Ithasbeenshownthat:thelittleindentationwhichrepresentsthequantum noiseofthesystemappearsintheevolutioncurvesofQundertheC RWA ;thequantumnoisewhichiscausedbyvirtualphotonfieldgraduallybecomesweakwhenωincreases;thequantumnoiseincreaseswhen nincreases;thevirtualphotonprocesscanstrengthenthesqueezingeffectobviously .Besides,thedependenceoftheatom fieldcouplingconstantλandtheatom atomcouplingconstantgonthesqueezingeffectsofthefieldisobservedinourresults.</p> <br/>Acta Physica Sinica. 2002 51(1): 84-90. Published 2005-04-11 Author(s): Wan Lin, Liu Su-Mei, Liu San-Qiu <br/><p>Inthispaper,thesqueezingeffectsofalightfieldintheT CmodelisstudiedbymeansofthequantumtheoryintheCounter Rotating Wave Approximation (C RWA) .Ithasbeenshownthat:thelittleindentationwhichrepresentsthequantum noiseofthesystemappearsintheevolutioncurvesofQundertheC RWA ;thequantumnoisewhichiscausedbyvirtualphotonfieldgraduallybecomesweakwhenωincreases;thequantumnoiseincreaseswhen nincreases;thevirtualphotonprocesscanstrengthenthesqueezingeffectobviously .Besides,thedependenceoftheatom fieldcouplingconstantλandtheatom atomcouplingconstantgonthesqueezingeffectsofthefieldisobservedinourresults.</p> <br/>Acta Physica Sinica. 2002 51(1): 84-90. Published 2005-04-11 Wan Lin, Liu Su-Mei, Liu San-Qiu 2005-04-11 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 84-90. article doi:10.7498/aps.51.84 10.7498/aps.51.84 Acta Physica Sinica 51 1 2005-04-11 //www.getgobooth.com/en/article/doi/10.7498/aps.51.84 84-90 <![CDATA[]]> //www.getgobooth.com/en/article/doi/10.7498/aps.51.91 Author(s): Xue Ting, Yu Jian, Yang Tian-Xin, Ni Wen-Jun, Li Shi-Chen <br/><p>Thecharacterizationofall opticalwavelengthconverterbasedonthecascadedsecond ordernonlinearitiesinLiNbO3waveguideshasbeencarriedoutinthisworkinordertofindrulestooptimizethefabricationparametersforstableandhigh efficiencyall opticalwavelengthconvention.Firstly,thecomparisonofnumericalanalysisresultsandthesmall signalanalysisresultsisgivenbasedonthecoupledmodeequation.Secondly,usingthenumericalresults,thedependenceofthefundamentalwavelengthandtheQPMgratingperiodonthebulktemperatureisgivenrespectively.Finally ,therelationshipbetweentheoutputpowerofaconvertedlightandthe 3dBbandwidthoffundamentalwavelength ,bulktemperature ,gratingperiodisanalyzed .</p> <br/>Acta Physica Sinica. 2002 51(1): 91-98. Published 2005-04-11 Author(s): Xue Ting, Yu Jian, Yang Tian-Xin, Ni Wen-Jun, Li Shi-Chen <br/><p>Thecharacterizationofall opticalwavelengthconverterbasedonthecascadedsecond ordernonlinearitiesinLiNbO3waveguideshasbeencarriedoutinthisworkinordertofindrulestooptimizethefabricationparametersforstableandhigh efficiencyall opticalwavelengthconvention.Firstly,thecomparisonofnumericalanalysisresultsandthesmall signalanalysisresultsisgivenbasedonthecoupledmodeequation.Secondly,usingthenumericalresults,thedependenceofthefundamentalwavelengthandtheQPMgratingperiodonthebulktemperatureisgivenrespectively.Finally ,therelationshipbetweentheoutputpowerofaconvertedlightandthe 3dBbandwidthoffundamentalwavelength ,bulktemperature ,gratingperiodisanalyzed .</p> <br/>Acta Physica Sinica. 2002 51(1): 91-98. Published 2005-04-11 Xue Ting, Yu Jian, Yang Tian-Xin, Ni Wen-Jun, Li Shi-Chen 2005-04-11 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 91-98. article doi:10.7498/aps.51.91 10.7498/aps.51.91 Acta Physica Sinica 51 1 2005-04-11 //www.getgobooth.com/en/article/doi/10.7498/aps.51.91 91-98 <![CDATA[]]> //www.getgobooth.com/en/article/doi/10.7498/aps.51.99 Author(s): Wei Qing, Wang Qi, Shi Jie-Long, Chen Yuan-Yuan <br/><p>Inthispaper,theexplicitformulaofJostfunctionpairsinthecaseofpureradiationisderivedbyusingthedressingmethodand,theanalysisoftheinteractionbetweensolitonsandradiationismade.Itisfoundthatinthecourseoftransmission ,theopticalpulse,whoseamplitudedecaysaccordingtothelawofthenegativesquarerootofpowerindexalongthepropagatingdirection ,ultimatelyevolvesintotheformofsoliton likewaveintheabsenceofradiation .Itisrevealedthatthefactorγplaysanimportantroleinthespectrumpropertiesfortheoutputoftheopticalpulse .Thedynamicalbehaviouroftheevolutionofsoliton likewavesduringtheinteractionofsolitonsandradiationisalsoanalyzed.</p> <br/>Acta Physica Sinica. 2002 51(1): 99-103. Published 2005-04-11 Author(s): Wei Qing, Wang Qi, Shi Jie-Long, Chen Yuan-Yuan <br/><p>Inthispaper,theexplicitformulaofJostfunctionpairsinthecaseofpureradiationisderivedbyusingthedressingmethodand,theanalysisoftheinteractionbetweensolitonsandradiationismade.Itisfoundthatinthecourseoftransmission ,theopticalpulse,whoseamplitudedecaysaccordingtothelawofthenegativesquarerootofpowerindexalongthepropagatingdirection ,ultimatelyevolvesintotheformofsoliton likewaveintheabsenceofradiation .Itisrevealedthatthefactorγplaysanimportantroleinthespectrumpropertiesfortheoutputoftheopticalpulse .Thedynamicalbehaviouroftheevolutionofsoliton likewavesduringtheinteractionofsolitonsandradiationisalsoanalyzed.</p> <br/>Acta Physica Sinica. 2002 51(1): 99-103. Published 2005-04-11 Wei Qing, Wang Qi, Shi Jie-Long, Chen Yuan-Yuan 2005-04-11 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 99-103. article doi:10.7498/aps.51.99 10.7498/aps.51.99 Acta Physica Sinica 51 1 2005-04-11 //www.getgobooth.com/en/article/doi/10.7498/aps.51.99 99-103 <![CDATA[]]> //www.getgobooth.com/en/article/doi/10.7498/aps.51.104 Author(s): Wu Guang-Ming, Lu Hong-Yan, Wang Yu, Shen Jun, Zhou Bin, Zhang Qin-Yuan, Deng Zhong-Sheng <br/><p>Scratch resistantsilicaaerogelfilmswitha 77%porosityand 1 . 1 2refractiveindexatambientpressureisreportedusingtheexchangeofsolventandmodificationof—CH3 group.Thesilicafilmswerepreparedinasol gelprocessbyadip coatingmethod ,andthenwerepostannealedinairandamixedgasatmosphere.Thefilmswerecharacterizedwithtransmissionelectronmicroscope,scanningelectronmicroscope,FourierTransforminfraredspectroscope,anellipsometer,andtheabrasiontest,respectively.Withthepostannealing,thefrequencyshiftofFTIRabsorptionω4(TO3 )peakofthefilmstoalowerwavenumberresultsfromadecreaseintheaverageSi—O—Sibridgingangle.Anincreaseinthefullwidthathalf maximum (FWHM)oftheω4peakisascribedtoawidedistributionofthebridginganglebecauseoftheformationofstrainedSi—O—Sibondscausedbythepostannealing.Theabrasionandadhesiontestsindicatethatthemixedgastreatmentnoticeablystrengthensthesilicanetwork .TheincreaseinstrengthisattributedtomoreSi—O—Sibondcross linkagesbetweensilicaparticlesformedbythemixedgastreatment.</p> <br/>Acta Physica Sinica. 2002 51(1): 104-110. Published 2005-04-11 Author(s): Wu Guang-Ming, Lu Hong-Yan, Wang Yu, Shen Jun, Zhou Bin, Zhang Qin-Yuan, Deng Zhong-Sheng <br/><p>Scratch resistantsilicaaerogelfilmswitha 77%porosityand 1 . 1 2refractiveindexatambientpressureisreportedusingtheexchangeofsolventandmodificationof—CH3 group.Thesilicafilmswerepreparedinasol gelprocessbyadip coatingmethod ,andthenwerepostannealedinairandamixedgasatmosphere.Thefilmswerecharacterizedwithtransmissionelectronmicroscope,scanningelectronmicroscope,FourierTransforminfraredspectroscope,anellipsometer,andtheabrasiontest,respectively.Withthepostannealing,thefrequencyshiftofFTIRabsorptionω4(TO3 )peakofthefilmstoalowerwavenumberresultsfromadecreaseintheaverageSi—O—Sibridgingangle.Anincreaseinthefullwidthathalf maximum (FWHM)oftheω4peakisascribedtoawidedistributionofthebridginganglebecauseoftheformationofstrainedSi—O—Sibondscausedbythepostannealing.Theabrasionandadhesiontestsindicatethatthemixedgastreatmentnoticeablystrengthensthesilicanetwork .TheincreaseinstrengthisattributedtomoreSi—O—Sibondcross linkagesbetweensilicaparticlesformedbythemixedgastreatment.</p> <br/>Acta Physica Sinica. 2002 51(1): 104-110. Published 2005-04-11 Wu Guang-Ming, Lu Hong-Yan, Wang Yu, Shen Jun, Zhou Bin, Zhang Qin-Yuan, Deng Zhong-Sheng 2005-04-11 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 104-110. article doi:10.7498/aps.51.104 10.7498/aps.51.104 Acta Physica Sinica 51 1 2005-04-11 //www.getgobooth.com/en/article/doi/10.7498/aps.51.104 104-110 <![CDATA[]]> //www.getgobooth.com/en/article/doi/10.7498/aps.51.111 Author(s): Zhang Shi-Bin, Kong Guang-Lin, Xu Yan-Yue, Wang Yong-Qian, Diao Hong-Wei, Liao Xian-Bo <br/><p>Transientphotoconductivityanditslight inducedchangewereinvestigatedbyusingaModel440 0boxcaraveragerandsignalprocessorforlightlyboron dopeda Si∶Hfilms.Thetransientphotoconductivitiesofthesampleweremeasuredatanannealedstateandlight soakedstates.Thetransientdecayprocessofthephotoconductivitycanbefittedfairlywellbyasecond orderexponentialdecayfunction ,whichindicatesthatthedecayprocessisrelatedwithtwodifferenttraps.Itisnoteworthythatthephotoconductivityofthefilmincreasesafterlight soaking.ThismaybeduetothedeactivityoftheboronacceptorB-4,andthussomeoftheboronatomscannolongeractasacceptorsanddrivesEFtoshiftsupward .Consequently,thenumberofeffectiverecombinationcentersmaybereducedandsothephotoconductivityincreases.</p> <br/>Acta Physica Sinica. 2002 51(1): 111-114. Published 2005-04-11 Author(s): Zhang Shi-Bin, Kong Guang-Lin, Xu Yan-Yue, Wang Yong-Qian, Diao Hong-Wei, Liao Xian-Bo <br/><p>Transientphotoconductivityanditslight inducedchangewereinvestigatedbyusingaModel440 0boxcaraveragerandsignalprocessorforlightlyboron dopeda Si∶Hfilms.Thetransientphotoconductivitiesofthesampleweremeasuredatanannealedstateandlight soakedstates.Thetransientdecayprocessofthephotoconductivitycanbefittedfairlywellbyasecond orderexponentialdecayfunction ,whichindicatesthatthedecayprocessisrelatedwithtwodifferenttraps.Itisnoteworthythatthephotoconductivityofthefilmincreasesafterlight soaking.ThismaybeduetothedeactivityoftheboronacceptorB-4,andthussomeoftheboronatomscannolongeractasacceptorsanddrivesEFtoshiftsupward .Consequently,thenumberofeffectiverecombinationcentersmaybereducedandsothephotoconductivityincreases.</p> <br/>Acta Physica Sinica. 2002 51(1): 111-114. Published 2005-04-11 Zhang Shi-Bin, Kong Guang-Lin, Xu Yan-Yue, Wang Yong-Qian, Diao Hong-Wei, Liao Xian-Bo 2005-04-11 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 111-114. article doi:10.7498/aps.51.111 10.7498/aps.51.111 Acta Physica Sinica 51 1 2005-04-11 //www.getgobooth.com/en/article/doi/10.7498/aps.51.111 111-114 <![CDATA[]]> //www.getgobooth.com/en/article/doi/10.7498/aps.51.115 Author(s): Li Xiao-Na, Nie Dong, Dong Chuang, Ma Teng-Cai, Jin Xing, Zhang Zhe <br/><p>Iron silicidefilmshavebeensynthesizedbymetalvaporvacuumarc (MEVVA)ionimplantationofironinto (1 1 1 )and (1 0 0 )orientedsiliconwafers.Thestructureevolutionwascharacterizedusingtransmissionelectronmicroscopy (TEM)andhighresolutionelectronmicroscopy (HREM) .TheβFeSi2filmsandburiedlayerswithdifferentdepthandthicknesswereobtainedbyadjustingtheimplantationenergyanddose .Theformationofα,β,γandCsCl FeSi2 phaseshavebeenobserved .ThephasetransitionorderisγFeSi2→βFeSi2→αFeSi2,CsClFeSi2→βFeSi2→αFeSi2 or βFeSi2→αFeSi2.Anamorphouslayerwasformedat60kVand 4× 1 0 1 7ions cm2 ,thephasetransitionorderisamorphous→β FeSi2 →α FeSi2 .Themorphologyandpositionofthesilicidefilmschangewiththeannealingtemperature.Thesilicidegrainsgrowwithincreasingannealingtemperaturewithfurtherincreaseoftemperature ,thecontinuoussilicidelayersshrinkintoisolatedislandsandtheinterfaceβ FeSi2 Sibe comesrougher.Inthispaper,thecomplicatedorientationrelationshipsexistingbetweenβ FeSi2 andSiwerealsoinvestigated</p> <br/>Acta Physica Sinica. 2002 51(1): 115-124. Published 2005-04-11 Author(s): Li Xiao-Na, Nie Dong, Dong Chuang, Ma Teng-Cai, Jin Xing, Zhang Zhe <br/><p>Iron silicidefilmshavebeensynthesizedbymetalvaporvacuumarc (MEVVA)ionimplantationofironinto (1 1 1 )and (1 0 0 )orientedsiliconwafers.Thestructureevolutionwascharacterizedusingtransmissionelectronmicroscopy (TEM)andhighresolutionelectronmicroscopy (HREM) .TheβFeSi2filmsandburiedlayerswithdifferentdepthandthicknesswereobtainedbyadjustingtheimplantationenergyanddose .Theformationofα,β,γandCsCl FeSi2 phaseshavebeenobserved .ThephasetransitionorderisγFeSi2→βFeSi2→αFeSi2,CsClFeSi2→βFeSi2→αFeSi2 or βFeSi2→αFeSi2.Anamorphouslayerwasformedat60kVand 4× 1 0 1 7ions cm2 ,thephasetransitionorderisamorphous→β FeSi2 →α FeSi2 .Themorphologyandpositionofthesilicidefilmschangewiththeannealingtemperature.Thesilicidegrainsgrowwithincreasingannealingtemperaturewithfurtherincreaseoftemperature ,thecontinuoussilicidelayersshrinkintoisolatedislandsandtheinterfaceβ FeSi2 Sibe comesrougher.Inthispaper,thecomplicatedorientationrelationshipsexistingbetweenβ FeSi2 andSiwerealsoinvestigated</p> <br/>Acta Physica Sinica. 2002 51(1): 115-124. Published 2005-04-11 Li Xiao-Na, Nie Dong, Dong Chuang, Ma Teng-Cai, Jin Xing, Zhang Zhe 2005-04-11 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 115-124. article doi:10.7498/aps.51.115 10.7498/aps.51.115 Acta Physica Sinica 51 1 2005-04-11 //www.getgobooth.com/en/article/doi/10.7498/aps.51.115 115-124 <![CDATA[]]> //www.getgobooth.com/en/article/doi/10.7498/aps.51.125 Author(s): Yao Ming-Zhen, Liang Ling, Gu Mu, Duan Yong, Ma Xiao-Hui <br/><p>ThispaperpresentsastudyonelectronicstructuresofdefectsassociatedwithoxygenvacancyVOandleadvacancyVPbinleadtungstatecrystals (PbWO4) ,bytherelativisticself consistentdiscretevariationalembeddedclustermethod .Furthermore,theexcitationenergyisalsocalculated.WefoundthatWO3 +VOcouldbetheabsorptioncenterat3 50nmand 42 0nm ,andtheexistenceofVPbcandiminishthebandgapofWO42 -.</p> <br/>Acta Physica Sinica. 2002 51(1): 125-128. Published 2005-04-11 Author(s): Yao Ming-Zhen, Liang Ling, Gu Mu, Duan Yong, Ma Xiao-Hui <br/><p>ThispaperpresentsastudyonelectronicstructuresofdefectsassociatedwithoxygenvacancyVOandleadvacancyVPbinleadtungstatecrystals (PbWO4) ,bytherelativisticself consistentdiscretevariationalembeddedclustermethod .Furthermore,theexcitationenergyisalsocalculated.WefoundthatWO3 +VOcouldbetheabsorptioncenterat3 50nmand 42 0nm ,andtheexistenceofVPbcandiminishthebandgapofWO42 -.</p> <br/>Acta Physica Sinica. 2002 51(1): 125-128. Published 2005-04-11 Yao Ming-Zhen, Liang Ling, Gu Mu, Duan Yong, Ma Xiao-Hui 2005-04-11 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 125-128. article doi:10.7498/aps.51.125 10.7498/aps.51.125 Acta Physica Sinica 51 1 2005-04-11 //www.getgobooth.com/en/article/doi/10.7498/aps.51.125 125-128 <![CDATA[]]> //www.getgobooth.com/en/article/doi/10.7498/aps.51.129 Author(s): Meng Ji-Bao, Chen Zhao-Jia, Luo Jian-Lin, Bai Hai-Yang, Wang Wei-Hua, Zheng Ping, Zhang Jie, Shu Shao-Kui, Jin Duo, Wang Yu-Peng <br/><p>Inthispaper,theexperimentalresultsofthelow temperatureresistancebetween 0.1Kto 2 50Kandspecificheatbetween5Kto 70KofheavyfermioncompoundsCeCu6 xNix(x =0.0 ,0.0 5,0.1 ,0.15,0.2 )arereported .ThedopingeffectoftheNicontentonthelow temperaturepropertiesofCeCu6 isstudied .Thetemperaturesofresistancemaximuasofthesamplesreducedramaticallywiththeincreaseofthedopingcontentx.ThisindicatestheenhancementofmagneticmomentofminorCeionsthatareneighboringNiatomandthedecreaseofthecoherentscatteringbetweenthewholeCeionlatticeandtheconductionelectrons.Thelow temperatureelectronicspecificheatcoefficientγ(CE T ,whereCEistheelectronicspecificheat)isnearlyaconstantatlowtemperatures,butitapparentlyincreasesbelow 8Kduetotheincreaseofitseffectivemass.However,thetem peratureatwhichγbeginstoincreaseisnotsensitivetothecontentofNi,indicatingthatthestatusofmostceriumionsarenotaffected.</p> <br/>Acta Physica Sinica. 2002 51(1): 129-133. Published 2005-04-11 Author(s): Meng Ji-Bao, Chen Zhao-Jia, Luo Jian-Lin, Bai Hai-Yang, Wang Wei-Hua, Zheng Ping, Zhang Jie, Shu Shao-Kui, Jin Duo, Wang Yu-Peng <br/><p>Inthispaper,theexperimentalresultsofthelow temperatureresistancebetween 0.1Kto 2 50Kandspecificheatbetween5Kto 70KofheavyfermioncompoundsCeCu6 xNix(x =0.0 ,0.0 5,0.1 ,0.15,0.2 )arereported .ThedopingeffectoftheNicontentonthelow temperaturepropertiesofCeCu6 isstudied .Thetemperaturesofresistancemaximuasofthesamplesreducedramaticallywiththeincreaseofthedopingcontentx.ThisindicatestheenhancementofmagneticmomentofminorCeionsthatareneighboringNiatomandthedecreaseofthecoherentscatteringbetweenthewholeCeionlatticeandtheconductionelectrons.Thelow temperatureelectronicspecificheatcoefficientγ(CE T ,whereCEistheelectronicspecificheat)isnearlyaconstantatlowtemperatures,butitapparentlyincreasesbelow 8Kduetotheincreaseofitseffectivemass.However,thetem peratureatwhichγbeginstoincreaseisnotsensitivetothecontentofNi,indicatingthatthestatusofmostceriumionsarenotaffected.</p> <br/>Acta Physica Sinica. 2002 51(1): 129-133. Published 2005-04-11 Meng Ji-Bao, Chen Zhao-Jia, Luo Jian-Lin, Bai Hai-Yang, Wang Wei-Hua, Zheng Ping, Zhang Jie, Shu Shao-Kui, Jin Duo, Wang Yu-Peng 2005-04-11 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 129-133. article doi:10.7498/aps.51.129 10.7498/aps.51.129 Acta Physica Sinica 51 1 2005-04-11 //www.getgobooth.com/en/article/doi/10.7498/aps.51.129 129-133 <![CDATA[]]> //www.getgobooth.com/en/article/doi/10.7498/aps.51.134 Author(s): Zhang Xi-Juan, Li Guang-Qi, Sun Xin <br/><p>Howtoexcitethebiexctionsinapolymerisanessentialsubject,sincethebiexcitonpossessesaneffectofphoto inducedpolarizationreversion.Thispaperproposesanewchanneltoproducethebiexcitonthroughtwo electronexcitation.Therelaxationprocessesofbothlatticedistortionandelectronicstatesaresimulatedbystudyingitsdynamics,andtherelaxationtimeofbiexcitonformationandpolarizationreversionisdetermined .</p> <br/>Acta Physica Sinica. 2002 51(1): 134-137. Published 2005-04-11 Author(s): Zhang Xi-Juan, Li Guang-Qi, Sun Xin <br/><p>Howtoexcitethebiexctionsinapolymerisanessentialsubject,sincethebiexcitonpossessesaneffectofphoto inducedpolarizationreversion.Thispaperproposesanewchanneltoproducethebiexcitonthroughtwo electronexcitation.Therelaxationprocessesofbothlatticedistortionandelectronicstatesaresimulatedbystudyingitsdynamics,andtherelaxationtimeofbiexcitonformationandpolarizationreversionisdetermined .</p> <br/>Acta Physica Sinica. 2002 51(1): 134-137. Published 2005-04-11 Zhang Xi-Juan, Li Guang-Qi, Sun Xin 2005-04-11 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 134-137. article doi:10.7498/aps.51.134 10.7498/aps.51.134 Acta Physica Sinica 51 1 2005-04-11 //www.getgobooth.com/en/article/doi/10.7498/aps.51.134 134-137 <![CDATA[]]> //www.getgobooth.com/en/article/doi/10.7498/aps.51.138 Author(s): Xiao Xi-Feng, Kang Jun-Yong <br/><p>VoltagetransientsduetothethermalelectroncaptureandemissionofDXcentersinn typeSn dopedAl0 . 2 6 Ga0 .74Aswere measuredbytheconstantcapacitancetechniqueandtransformedbyLaplacedefectspectroscopy (LDS) .Byanalyzingthevariationsofdiscreteemissionrateswithdifferentcaptureperiods,correspondingrelationsbetweendiscretecaptureandemissionratesandcapturecoefficientsweredetermined .ThefinestructuresofelectroncapturebarriersoftheSn relatedDXcenterswereobtainedbylinearfittingthedataoftemperature dependencesofthecapturecoefficients.TheresultscalcuatedbyusingthefirstprinciplepseudopotentialmethodshowthatthefinestructuresofthecapturebarriersmainlycontributetoAl GaatdifferentlocalconfigurationsnearSnatomsduetothealloyrandomeffect.</p> <br/>Acta Physica Sinica. 2002 51(1): 138-142. Published 2005-04-11 Author(s): Xiao Xi-Feng, Kang Jun-Yong <br/><p>VoltagetransientsduetothethermalelectroncaptureandemissionofDXcentersinn typeSn dopedAl0 . 2 6 Ga0 .74Aswere measuredbytheconstantcapacitancetechniqueandtransformedbyLaplacedefectspectroscopy (LDS) .Byanalyzingthevariationsofdiscreteemissionrateswithdifferentcaptureperiods,correspondingrelationsbetweendiscretecaptureandemissionratesandcapturecoefficientsweredetermined .ThefinestructuresofelectroncapturebarriersoftheSn relatedDXcenterswereobtainedbylinearfittingthedataoftemperature dependencesofthecapturecoefficients.TheresultscalcuatedbyusingthefirstprinciplepseudopotentialmethodshowthatthefinestructuresofthecapturebarriersmainlycontributetoAl GaatdifferentlocalconfigurationsnearSnatomsduetothealloyrandomeffect.</p> <br/>Acta Physica Sinica. 2002 51(1): 138-142. Published 2005-04-11 Xiao Xi-Feng, Kang Jun-Yong 2005-04-11 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 138-142. article doi:10.7498/aps.51.138 10.7498/aps.51.138 Acta Physica Sinica 51 1 2005-04-11 //www.getgobooth.com/en/article/doi/10.7498/aps.51.138 138-142 <![CDATA[]]> //www.getgobooth.com/en/article/doi/10.7498/aps.51.143 Author(s): Xu Hui, Song Wei-Pu, Li Xin-Mei <br/><p>Aconductancemodelofelectronictunnelingtransferissetup,andanewD .Cconductanceformulainone dimensionaldisorderedsystemisderived .BycalculatingtheD .Cconductivity,therelationshipamongtheelectricfield、temperatureandconductivityisanalyzed ,andtheeffectofdisordereddegreeontheD .Cconductanceisdiscussed .Theresultshowsthattheconductivityofadisorderedsystemdecreaseswiththeincreaseofdisordereddegree.Whentheelectricfieldisweak ,itsconductivityishighandhasaseriesofpeakvalues.Hewever,whentheelectricfieldisstrong,itsconductivityisweak.Inthelow temperatureregion,thedisorderedsystemshowsacharacteristicofnegativedifferentialdependenceofresistanceandtemperature.Onthecontrary,itsconductivitydecreaseswiththeriseoftemperatureinthehigh temperatureregion.Thisresultisingoodagreementwiththeexperiments.</p> <br/>Acta Physica Sinica. 2002 51(1): 143-147. Published 2005-04-11 Author(s): Xu Hui, Song Wei-Pu, Li Xin-Mei <br/><p>Aconductancemodelofelectronictunnelingtransferissetup,andanewD .Cconductanceformulainone dimensionaldisorderedsystemisderived .BycalculatingtheD .Cconductivity,therelationshipamongtheelectricfield、temperatureandconductivityisanalyzed ,andtheeffectofdisordereddegreeontheD .Cconductanceisdiscussed .Theresultshowsthattheconductivityofadisorderedsystemdecreaseswiththeincreaseofdisordereddegree.Whentheelectricfieldisweak ,itsconductivityishighandhasaseriesofpeakvalues.Hewever,whentheelectricfieldisstrong,itsconductivityisweak.Inthelow temperatureregion,thedisorderedsystemshowsacharacteristicofnegativedifferentialdependenceofresistanceandtemperature.Onthecontrary,itsconductivitydecreaseswiththeriseoftemperatureinthehigh temperatureregion.Thisresultisingoodagreementwiththeexperiments.</p> <br/>Acta Physica Sinica. 2002 51(1): 143-147. Published 2005-04-11 Xu Hui, Song Wei-Pu, Li Xin-Mei 2005-04-11 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 143-147. article doi:10.7498/aps.51.143 10.7498/aps.51.143 Acta Physica Sinica 51 1 2005-04-11 //www.getgobooth.com/en/article/doi/10.7498/aps.51.143 143-147 <![CDATA[]]> //www.getgobooth.com/en/article/doi/10.7498/aps.51.148 Author(s): Yang Lin-An, Zhang Yi-Men, Gong Ren-Xi, Zhang Yu-Ming <br/><p>Alarge signalanalyticalmodelwithtemperatureconsideredfor4H SiCradiofrequencypowerMESFETI Vcharacteristicsisproposedbasedonthetheoryofsaturatedcarriervelocity,bymeansofwhichtheself heatingeffectistakenintoaccountsoastoanalyzethetemperatureperformanceofSiCpowerMESFET .Theheattransportbetweenthechannelandthesubstrateismodeledwithnon constanttemperatureT0 atthebottomof4H SiCsubstrateinordertofittherealactionsofdevices.Agoodagree mentbetweensimulationandmeasurementisobtained.</p> <br/>Acta Physica Sinica. 2002 51(1): 148-152. Published 2005-04-11 Author(s): Yang Lin-An, Zhang Yi-Men, Gong Ren-Xi, Zhang Yu-Ming <br/><p>Alarge signalanalyticalmodelwithtemperatureconsideredfor4H SiCradiofrequencypowerMESFETI Vcharacteristicsisproposedbasedonthetheoryofsaturatedcarriervelocity,bymeansofwhichtheself heatingeffectistakenintoaccountsoastoanalyzethetemperatureperformanceofSiCpowerMESFET .Theheattransportbetweenthechannelandthesubstrateismodeledwithnon constanttemperatureT0 atthebottomof4H SiCsubstrateinordertofittherealactionsofdevices.Agoodagree mentbetweensimulationandmeasurementisobtained.</p> <br/>Acta Physica Sinica. 2002 51(1): 148-152. Published 2005-04-11 Yang Lin-An, Zhang Yi-Men, Gong Ren-Xi, Zhang Yu-Ming 2005-04-11 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 148-152. article doi:10.7498/aps.51.148 10.7498/aps.51.148 Acta Physica Sinica 51 1 2005-04-11 //www.getgobooth.com/en/article/doi/10.7498/aps.51.148 148-152 <![CDATA[]]> //www.getgobooth.com/en/article/doi/10.7498/aps.51.153 Author(s): He Guo-Gang, Wang Xiao-Sheng, She Wei-Long, Tao Meng-Xian, Lin Li-Peng <br/><p>Wehaveobservedthataweaklightbeamwillexperienceadefocusing contractprocessbeforeitcomestosteadystatewhenpassingthroughaCu:KNSBNcrystalwithatransientspatialelectricfield.Thisprocessbecamefastbyincreasingintensityofthelightbeam .Webelievethatthedefocusing contractprocessresultsfrombotheffectsofthetransientelectricfieldinthecrystalsandthephotovoltaicandrefocusingfieldsgeneratedbythebeamitself.</p> <br/>Acta Physica Sinica. 2002 51(1): 153-158. Published 2005-04-11 Author(s): He Guo-Gang, Wang Xiao-Sheng, She Wei-Long, Tao Meng-Xian, Lin Li-Peng <br/><p>Wehaveobservedthataweaklightbeamwillexperienceadefocusing contractprocessbeforeitcomestosteadystatewhenpassingthroughaCu:KNSBNcrystalwithatransientspatialelectricfield.Thisprocessbecamefastbyincreasingintensityofthelightbeam .Webelievethatthedefocusing contractprocessresultsfrombotheffectsofthetransientelectricfieldinthecrystalsandthephotovoltaicandrefocusingfieldsgeneratedbythebeamitself.</p> <br/>Acta Physica Sinica. 2002 51(1): 153-158. Published 2005-04-11 He Guo-Gang, Wang Xiao-Sheng, She Wei-Long, Tao Meng-Xian, Lin Li-Peng 2005-04-11 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 153-158. article doi:10.7498/aps.51.153 10.7498/aps.51.153 Acta Physica Sinica 51 1 2005-04-11 //www.getgobooth.com/en/article/doi/10.7498/aps.51.153 153-158 <![CDATA[]]> //www.getgobooth.com/en/article/doi/10.7498/aps.51.159 Author(s): Long Chao-Yun, Liu Bo, Wang Xin-Fu <br/><p>Thequantumwavefunctionandthecorrespondingenergylevelsofthedissipativemesoscopiccapacitancecouplingcircuitsareobtainedbyusingunitaryandlineartransformations.Thequantumfluctuationofchargeandcurrentinanarbitraryeigenstateofthesystemhavebeenalsogiven.Theresultsshowthatthefluctuationofchargeandcurrentdependsonnotonlytheeigenstatebutalsotheelectronicdeviceparameters.</p> <br/>Acta Physica Sinica. 2002 51(1): 159-162. Published 2005-04-11 Author(s): Long Chao-Yun, Liu Bo, Wang Xin-Fu <br/><p>Thequantumwavefunctionandthecorrespondingenergylevelsofthedissipativemesoscopiccapacitancecouplingcircuitsareobtainedbyusingunitaryandlineartransformations.Thequantumfluctuationofchargeandcurrentinanarbitraryeigenstateofthesystemhavebeenalsogiven.Theresultsshowthatthefluctuationofchargeandcurrentdependsonnotonlytheeigenstatebutalsotheelectronicdeviceparameters.</p> <br/>Acta Physica Sinica. 2002 51(1): 159-162. Published 2005-04-11 Long Chao-Yun, Liu Bo, Wang Xin-Fu 2005-04-11 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 159-162. article doi:10.7498/aps.51.159 10.7498/aps.51.159 Acta Physica Sinica 51 1 2005-04-11 //www.getgobooth.com/en/article/doi/10.7498/aps.51.159 159-162 <![CDATA[]]> //www.getgobooth.com/en/article/doi/10.7498/aps.51.163 Author(s): Liu Hong-Xia, Zheng Xue-Feng, Hao Yao <br/><p>Thispaperpresentsanexperimentalmethodformeasuringthedensityoftrappingcharges.Thismethodisbasedonthedy namicequilibriumequationfortheprocessoftrappedcharges.WecanobtainthedensityandthelocationoftrappingchargesbymeasuringthehighfrequencyC VcurveofMOScapacitancebeforeandafterstress,andthechangeofgatevoltageunderconstantcurrentstress.Theanalyticalexpressionofthedensityoftrappingchargesisproposed .Themethodandtheresultsofparametersextractionarealsopresented .Experimentalresultsshowthatthismethodisconvenientandprecise .</p> <br/>Acta Physica Sinica. 2002 51(1): 163-166. Published 2005-04-11 Author(s): Liu Hong-Xia, Zheng Xue-Feng, Hao Yao <br/><p>Thispaperpresentsanexperimentalmethodformeasuringthedensityoftrappingcharges.Thismethodisbasedonthedy namicequilibriumequationfortheprocessoftrappedcharges.WecanobtainthedensityandthelocationoftrappingchargesbymeasuringthehighfrequencyC VcurveofMOScapacitancebeforeandafterstress,andthechangeofgatevoltageunderconstantcurrentstress.Theanalyticalexpressionofthedensityoftrappingchargesisproposed .Themethodandtheresultsofparametersextractionarealsopresented .Experimentalresultsshowthatthismethodisconvenientandprecise .</p> <br/>Acta Physica Sinica. 2002 51(1): 163-166. Published 2005-04-11 Liu Hong-Xia, Zheng Xue-Feng, Hao Yao 2005-04-11 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 163-166. article doi:10.7498/aps.51.163 10.7498/aps.51.163 Acta Physica Sinica 51 1 2005-04-11 //www.getgobooth.com/en/article/doi/10.7498/aps.51.163 163-166 <![CDATA[]]> //www.getgobooth.com/en/article/doi/10.7498/aps.51.167 Author(s): Jiang Wen-Hong, Luo Si-Wei, ZhongcunQingjiu <br/><p>Inmeasurementsoftimedecayinaperpendiculardouble layeredmedium ,alargeoutputdecaywasobservedwhenaregularsingle poleheadwasusedforbothwritingandreading .Investigationsofthisphenomenonrevealedthatthedemagnetizationofthemediumwascausedbytheinstabilityofthedomainwallofthemainpolefilmandalsobytheconcentrationofstrayfieldsbythemainpoleduringthereadingprocess.Severalcountermeasureswereproposed .</p> <br/>Acta Physica Sinica. 2002 51(1): 167-170. Published 2005-04-11 Author(s): Jiang Wen-Hong, Luo Si-Wei, ZhongcunQingjiu <br/><p>Inmeasurementsoftimedecayinaperpendiculardouble layeredmedium ,alargeoutputdecaywasobservedwhenaregularsingle poleheadwasusedforbothwritingandreading .Investigationsofthisphenomenonrevealedthatthedemagnetizationofthemediumwascausedbytheinstabilityofthedomainwallofthemainpolefilmandalsobytheconcentrationofstrayfieldsbythemainpoleduringthereadingprocess.Severalcountermeasureswereproposed .</p> <br/>Acta Physica Sinica. 2002 51(1): 167-170. Published 2005-04-11 Jiang Wen-Hong, Luo Si-Wei, ZhongcunQingjiu 2005-04-11 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 167-170. article doi:10.7498/aps.51.167 10.7498/aps.51.167 Acta Physica Sinica 51 1 2005-04-11 //www.getgobooth.com/en/article/doi/10.7498/aps.51.167 167-170 <![CDATA[]]> //www.getgobooth.com/en/article/doi/10.7498/aps.51.171 Author(s): Wang Yuan-Xu, Zhong Wei-Lie, Wang Chun-Lei, Zhang Pei-Lin <br/><p>InordertoobtainthefinestructureoftetragonalferroelectricPbFe0.5Nb0.5O3 ,wecalculateditstotalenergybyfull potentiallinearizedaugmentedplanewavemethod .TheequilibriumconfigurationofB sitecations(FeandNb)wasdetermined .ThedisplacementofFeionsalong [0 0 1 ]directioninthefinestructureis0 .0 2 2nmandthatofNbionsis0 .0020nm .Theferroelec tricinstabilityresultsmainlyfromthedisplacementofFeions.</p> <br/>Acta Physica Sinica. 2002 51(1): 171-173. Published 2005-04-11 Author(s): Wang Yuan-Xu, Zhong Wei-Lie, Wang Chun-Lei, Zhang Pei-Lin <br/><p>InordertoobtainthefinestructureoftetragonalferroelectricPbFe0.5Nb0.5O3 ,wecalculateditstotalenergybyfull potentiallinearizedaugmentedplanewavemethod .TheequilibriumconfigurationofB sitecations(FeandNb)wasdetermined .ThedisplacementofFeionsalong [0 0 1 ]directioninthefinestructureis0 .0 2 2nmandthatofNbionsis0 .0020nm .Theferroelec tricinstabilityresultsmainlyfromthedisplacementofFeions.</p> <br/>Acta Physica Sinica. 2002 51(1): 171-173. Published 2005-04-11 Wang Yuan-Xu, Zhong Wei-Lie, Wang Chun-Lei, Zhang Pei-Lin 2005-04-11 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 171-173. article doi:10.7498/aps.51.171 10.7498/aps.51.171 Acta Physica Sinica 51 1 2005-04-11 //www.getgobooth.com/en/article/doi/10.7498/aps.51.171 171-173 <![CDATA[]]> //www.getgobooth.com/en/article/doi/10.7498/aps.51.174 Author(s): Gao Yu-Lin, Lu Yi-Jun, Zheng Jian-Sheng, Chai Zhi-Gang, Sang Hai-Yu, Zeng Xue-Ran <br/><p>Thetime resolvedphotoluminescence (TRPL)spectraoforderedGa0 .5In0 . 5Palloysgrownbymetalorganicvaporphaseepitaxywereinvestigated .Theleast squarefittingoftheluminescencedecayspectrashowsthatthereexisttwoexponentialprocesses:forthequickprocessthelifetimeτ1 isabout1 2 8ps— 2 50psand 1 86ps— 546psatroomtemperatureand77K ,respectively;andfortheslowprocessthelifetimeτ2 is,about3 0 8ps— 1 83 2ps,atroomtemperatureandat77K ,aslongasnanosecondandevenmorethan 2 8ns.Theshortlifetimeprocessbelongstotherecombinationofcarriersintheordereddomains,correspondingtothehigh energypeakinthePLspectra.Thelonglifetimeprocesscorrespondstothelow energypeakinthePLspectra.Thestrongexcitationintensitydependenceofτ2 atafixedenergyindicatesthatthelonglifetimeprocesscouldnotbeexplainedintermsofdonor acceptorpair(DAP) .Weattributetheemissiontotherecombinationbetweenthespatiallyseparatedcentersoftheelectronsinordereddomainsandtheholesindisorderedregions.TheTRPLspectraat77Kexhibitablue shiftwithtimedelay ,indicatingthatthecarrierstransferfromdisorderedregionstoordereddomains.</p> <br/>Acta Physica Sinica. 2002 51(1): 174-177. Published 2005-04-11 Author(s): Gao Yu-Lin, Lu Yi-Jun, Zheng Jian-Sheng, Chai Zhi-Gang, Sang Hai-Yu, Zeng Xue-Ran <br/><p>Thetime resolvedphotoluminescence (TRPL)spectraoforderedGa0 .5In0 . 5Palloysgrownbymetalorganicvaporphaseepitaxywereinvestigated .Theleast squarefittingoftheluminescencedecayspectrashowsthatthereexisttwoexponentialprocesses:forthequickprocessthelifetimeτ1 isabout1 2 8ps— 2 50psand 1 86ps— 546psatroomtemperatureand77K ,respectively;andfortheslowprocessthelifetimeτ2 is,about3 0 8ps— 1 83 2ps,atroomtemperatureandat77K ,aslongasnanosecondandevenmorethan 2 8ns.Theshortlifetimeprocessbelongstotherecombinationofcarriersintheordereddomains,correspondingtothehigh energypeakinthePLspectra.Thelonglifetimeprocesscorrespondstothelow energypeakinthePLspectra.Thestrongexcitationintensitydependenceofτ2 atafixedenergyindicatesthatthelonglifetimeprocesscouldnotbeexplainedintermsofdonor acceptorpair(DAP) .Weattributetheemissiontotherecombinationbetweenthespatiallyseparatedcentersoftheelectronsinordereddomainsandtheholesindisorderedregions.TheTRPLspectraat77Kexhibitablue shiftwithtimedelay ,indicatingthatthecarrierstransferfromdisorderedregionstoordereddomains.</p> <br/>Acta Physica Sinica. 2002 51(1): 174-177. Published 2005-04-11 Gao Yu-Lin, Lu Yi-Jun, Zheng Jian-Sheng, Chai Zhi-Gang, Sang Hai-Yu, Zeng Xue-Ran 2005-04-11 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 174-177. article doi:10.7498/aps.51.174 10.7498/aps.51.174 Acta Physica Sinica 51 1 2005-04-11 //www.getgobooth.com/en/article/doi/10.7498/aps.51.174 174-177 <![CDATA[]]> //www.getgobooth.com/en/article/doi/10.7498/aps.51.178 Author(s): Yang He-Qing, Wang Xuan, zhang Bang-Lao, Li Yong-Fang, Zhang Liang-Ying, Yao Xi <br/><p>TheGeO2 SiO2 gel glasseswerepreparedbythesol gelmethodwithtetraethoxysilane (Si(OC2 H5) 4)and 3 trichloroger maniumpropanoicaci (Cl3 GeCH2 CH2 COOH)asstartingmaterials.Thegel glassesshowastrongroom temperaturephotoluminescencewithpeaksat575and 62 4nmundertheexcitationofthe 53 2nmlineofaNd∶YAGlaser.Thephotoluminescence spectraarecausedbyGeO2 nanoparticlesembeddedingel glasses.TheGeO2 SiO2 gel glassesarecharacterizedbytheopticalabsorption,X raydiffraction (XRD)andtransmissionelectionmecroscopy.ThesizeofGeO2 nanoparticlesembeddedingelglassesbecomeslargerastheGeO2 contentincreases,andthustheopticalabsorptionedgeofthegel glassshiftstothelower energyside .TheGeO2 nanoparticlestructuresarefoundtobeamorphousGeO2 inthegel glassesbytheXRDandtheelectrondiffractionpattern .</p> <br/>Acta Physica Sinica. 2002 51(1): 178-182. Published 2005-04-11 Author(s): Yang He-Qing, Wang Xuan, zhang Bang-Lao, Li Yong-Fang, Zhang Liang-Ying, Yao Xi <br/><p>TheGeO2 SiO2 gel glasseswerepreparedbythesol gelmethodwithtetraethoxysilane (Si(OC2 H5) 4)and 3 trichloroger maniumpropanoicaci (Cl3 GeCH2 CH2 COOH)asstartingmaterials.Thegel glassesshowastrongroom temperaturephotoluminescencewithpeaksat575and 62 4nmundertheexcitationofthe 53 2nmlineofaNd∶YAGlaser.Thephotoluminescence spectraarecausedbyGeO2 nanoparticlesembeddedingel glasses.TheGeO2 SiO2 gel glassesarecharacterizedbytheopticalabsorption,X raydiffraction (XRD)andtransmissionelectionmecroscopy.ThesizeofGeO2 nanoparticlesembeddedingelglassesbecomeslargerastheGeO2 contentincreases,andthustheopticalabsorptionedgeofthegel glassshiftstothelower energyside .TheGeO2 nanoparticlestructuresarefoundtobeamorphousGeO2 inthegel glassesbytheXRDandtheelectrondiffractionpattern .</p> <br/>Acta Physica Sinica. 2002 51(1): 178-182. Published 2005-04-11 Yang He-Qing, Wang Xuan, zhang Bang-Lao, Li Yong-Fang, Zhang Liang-Ying, Yao Xi 2005-04-11 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 178-182. article doi:10.7498/aps.51.178 10.7498/aps.51.178 Acta Physica Sinica 51 1 2005-04-11 //www.getgobooth.com/en/article/doi/10.7498/aps.51.178 178-182 <![CDATA[]]> //www.getgobooth.com/en/article/doi/10.7498/aps.51.183 Author(s): Liu Fa-Min, Wang Tian-Min, Zhang Li-De <br/><p>NanocrystallineGaSbParticlesembeddedinSiO2 filmsweregrownbyradiofrequencymagnetronco sputtering .ThetransmissionabsorptionofthecompositefilmwasrecordedwithCary 5Espectrophotometeratroomtemperature.Thetwo photonopticalnonlinearitiesoftheGaSb SiO2 compositethinfilmsat63 2 .8nmweremeasuredbyZ scanmethod,andtheresultsare:twophotonabsorptioncoefficientβ≈ 0 . 0 82m W ,nonlinearrefractiveindexγ≈ 3 .76× 1 0 -9m2 Wandthenonlinearsusceptibilityχ(3 )≈ 7.84× 1 0 -9esu .</p> <br/>Acta Physica Sinica. 2002 51(1): 183-186. Published 2005-04-11 Author(s): Liu Fa-Min, Wang Tian-Min, Zhang Li-De <br/><p>NanocrystallineGaSbParticlesembeddedinSiO2 filmsweregrownbyradiofrequencymagnetronco sputtering .ThetransmissionabsorptionofthecompositefilmwasrecordedwithCary 5Espectrophotometeratroomtemperature.Thetwo photonopticalnonlinearitiesoftheGaSb SiO2 compositethinfilmsat63 2 .8nmweremeasuredbyZ scanmethod,andtheresultsare:twophotonabsorptioncoefficientβ≈ 0 . 0 82m W ,nonlinearrefractiveindexγ≈ 3 .76× 1 0 -9m2 Wandthenonlinearsusceptibilityχ(3 )≈ 7.84× 1 0 -9esu .</p> <br/>Acta Physica Sinica. 2002 51(1): 183-186. Published 2005-04-11 Liu Fa-Min, Wang Tian-Min, Zhang Li-De 2005-04-11 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 183-186. article doi:10.7498/aps.51.183 10.7498/aps.51.183 Acta Physica Sinica 51 1 2005-04-11 //www.getgobooth.com/en/article/doi/10.7498/aps.51.183 183-186 <![CDATA[]]> //www.getgobooth.com/en/article/doi/10.7498/aps.51.187 Author(s): Cui Da-Fu, Wang Huan-Hua, Dao Shou-Yu, Zhou Yue-Liang, ChenZheng Hao, Yang Guo-Zheng, Liu Feng-Qin, K .Ibrahim, Qian Hai-Jie <br/><p>OpticallytransparentSb dopedSrTiO3 (SrTi1-xSbxO3 )thinfilmswithatransmittancehigherthan 90 %invisibleregion havebeengrownonSrTiO3 (0 0 1 )substratesbypulsedlaserdepositionmethodusinganXeCllaserunderoxygenpartialpressureof2 0Pa.ThethinfilmwithSbdopingconcentrationofx=0 .0 5showsmetallic likeconductivitywitharesistivityρ~ 6.99×1 0 -3 Ω·cmatroomtemperature.XPSandsynchrotronradiationphotoelectronspectroscopy (SR PES)measurementfromtheSrTi0 . 95Sb0 .0 5O3 thinfilmrevealsthattheshallowanddeepimpuritydonorlevelswithinthebandgapoftheparentcompoundSrTiO3 areinducedbytheSbdoping.ThedelocalizedelectronswithintheshallowlevelsneartheFermilevelcanbeexcitedtotheconductionbandasfreecarriersforelectricalconductionbythermalionization.Thewidebandgap ,smalltransitionprobabilityandweakabsorptionduetothelowdensityofstatesintheimpuritylevelsresultintheopticaltransparencyofthefilm .</p> <br/>Acta Physica Sinica. 2002 51(1): 187-191. Published 2005-04-11 Author(s): Cui Da-Fu, Wang Huan-Hua, Dao Shou-Yu, Zhou Yue-Liang, ChenZheng Hao, Yang Guo-Zheng, Liu Feng-Qin, K .Ibrahim, Qian Hai-Jie <br/><p>OpticallytransparentSb dopedSrTiO3 (SrTi1-xSbxO3 )thinfilmswithatransmittancehigherthan 90 %invisibleregion havebeengrownonSrTiO3 (0 0 1 )substratesbypulsedlaserdepositionmethodusinganXeCllaserunderoxygenpartialpressureof2 0Pa.ThethinfilmwithSbdopingconcentrationofx=0 .0 5showsmetallic likeconductivitywitharesistivityρ~ 6.99×1 0 -3 Ω·cmatroomtemperature.XPSandsynchrotronradiationphotoelectronspectroscopy (SR PES)measurementfromtheSrTi0 . 95Sb0 .0 5O3 thinfilmrevealsthattheshallowanddeepimpuritydonorlevelswithinthebandgapoftheparentcompoundSrTiO3 areinducedbytheSbdoping.ThedelocalizedelectronswithintheshallowlevelsneartheFermilevelcanbeexcitedtotheconductionbandasfreecarriersforelectricalconductionbythermalionization.Thewidebandgap ,smalltransitionprobabilityandweakabsorptionduetothelowdensityofstatesintheimpuritylevelsresultintheopticaltransparencyofthefilm .</p> <br/>Acta Physica Sinica. 2002 51(1): 187-191. Published 2005-04-11 Cui Da-Fu, Wang Huan-Hua, Dao Shou-Yu, Zhou Yue-Liang, ChenZheng Hao, Yang Guo-Zheng, Liu Feng-Qin, K .Ibrahim, Qian Hai-Jie 2005-04-11 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 187-191. article doi:10.7498/aps.51.187 10.7498/aps.51.187 Acta Physica Sinica 51 1 2005-04-11 //www.getgobooth.com/en/article/doi/10.7498/aps.51.187 187-191 <![CDATA[]]> //www.getgobooth.com/en/article/doi/10.7498/aps.51.192 Author(s): Yao Jiang-Hong, Chen Ya-Hui, Xu Jing-Jun, Zhang Guang-Yin, Zhu Sheng-Xing <br/><p>Thedomainreversalcharacteristicsofnear stoichiometricLiNbO3 singlecrystals,whichwerepreparedbytheCzochralskimethodwithK2 Ofluxandthevaportransportequilibration,wereinvestigated.Theresultsshowthattheswitchfieldfor1 80°ferroelectricdomainreversalinthenear stoichiomentLiNbO3 crystaldecreaseswith [Li] [Nb]ratio.Wesuccessfullyachieved1 80°domainreversalinthenear stoichiometricLiNbO3 samplesof1 . 0mmthicknessbyusinga4. 0kV mmswitchfield .ApreliminaryexplanationforexperimentalresultsisgivenbasedontheLi sitevacancypointdefectmodel.</p> <br/>Acta Physica Sinica. 2002 51(1): 192-196. Published 2005-04-11 Author(s): Yao Jiang-Hong, Chen Ya-Hui, Xu Jing-Jun, Zhang Guang-Yin, Zhu Sheng-Xing <br/><p>Thedomainreversalcharacteristicsofnear stoichiometricLiNbO3 singlecrystals,whichwerepreparedbytheCzochralskimethodwithK2 Ofluxandthevaportransportequilibration,wereinvestigated.Theresultsshowthattheswitchfieldfor1 80°ferroelectricdomainreversalinthenear stoichiomentLiNbO3 crystaldecreaseswith [Li] [Nb]ratio.Wesuccessfullyachieved1 80°domainreversalinthenear stoichiometricLiNbO3 samplesof1 . 0mmthicknessbyusinga4. 0kV mmswitchfield .ApreliminaryexplanationforexperimentalresultsisgivenbasedontheLi sitevacancypointdefectmodel.</p> <br/>Acta Physica Sinica. 2002 51(1): 192-196. Published 2005-04-11 Yao Jiang-Hong, Chen Ya-Hui, Xu Jing-Jun, Zhang Guang-Yin, Zhu Sheng-Xing 2005-04-11 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 192-196. article doi:10.7498/aps.51.192 10.7498/aps.51.192 Acta Physica Sinica 51 1 2005-04-11 //www.getgobooth.com/en/article/doi/10.7498/aps.51.192 192-196 <![CDATA[]]> //www.getgobooth.com/en/article/doi/10.7498/aps.51.197 Author(s): Chen Guang <br/><p>ThecollapsesolutionofastarwithuniformdensityandzeropressuregivenintheclassicpaperofOppenheimerandSnyderisprovedtobeincomplete;itcannotcorrectlyconnecttheFriedmannandSchwarzschildmetricsastheinteriorandexteriorsolutions.Bytheextensionofsolutionparameterinthediscretespacetime,weconstructacompletegravitationalsolution ,whichcouldmakeanequivalenceconnectionbetweentheFriedmannandSchwarzschildmetricsandisprovestobesingularity free.Thesolutionshowsthatthereexistsarelationshipamongmatter,gravitationanddiscretespacetimeconfiguration .</p> <br/>Acta Physica Sinica. 2002 51(1): 197-200. Published 2005-04-11 Author(s): Chen Guang <br/><p>ThecollapsesolutionofastarwithuniformdensityandzeropressuregivenintheclassicpaperofOppenheimerandSnyderisprovedtobeincomplete;itcannotcorrectlyconnecttheFriedmannandSchwarzschildmetricsastheinteriorandexteriorsolutions.Bytheextensionofsolutionparameterinthediscretespacetime,weconstructacompletegravitationalsolution ,whichcouldmakeanequivalenceconnectionbetweentheFriedmannandSchwarzschildmetricsandisprovestobesingularity free.Thesolutionshowsthatthereexistsarelationshipamongmatter,gravitationanddiscretespacetimeconfiguration .</p> <br/>Acta Physica Sinica. 2002 51(1): 197-200. Published 2005-04-11 Chen Guang 2005-04-11 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 2002 51(1): 197-200. article doi:10.7498/aps.51.197 10.7498/aps.51.197 Acta Physica Sinica 51 1 2005-04-11 //www.getgobooth.com/en/article/doi/10.7498/aps.51.197 197-200
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