//www.getgobooth.com/ 必威体育下载 daily 15 2024-08-20 10:33:36 apsoffice@iphy.ac.cn apsoffice@iphy.ac.cn 2024-08-20 10:33:36 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 //www.getgobooth.com/en/article/doi/10.7498/aps.48.385 Author(s): HOU CHUN-FENG, SUN XIU-DONG, ZHOU ZHONG-XIANG, LI YAN <br/><p>The general formulas for radial matrix elements p|n′l′&lt; and q|n′m′&lt; of three-dimensional and two-dimensional isotropic harmonic oscillators are derived-</p> <br/>Acta Physica Sinica. 1999 48(3): 385-388. Published 1999-03-20 Author(s): HOU CHUN-FENG, SUN XIU-DONG, ZHOU ZHONG-XIANG, LI YAN <br/><p>The general formulas for radial matrix elements p|n′l′&lt; and q|n′m′&lt; of three-dimensional and two-dimensional isotropic harmonic oscillators are derived-</p> <br/>Acta Physica Sinica. 1999 48(3): 385-388. Published 1999-03-20 GENERAL FORMULAS FOR RADIAL MATRIX ELEMENTS OF ISOTROPIC HARMONIC OSCILLATORS HOU CHUN-FENG, SUN XIU-DONG, ZHOU ZHONG-XIANG, LI YAN 1999-03-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1999 48(3): 385-388. article doi:10.7498/aps.48.385 10.7498/aps.48.385 Acta Physica Sinica 48 3 1999-03-20 //www.getgobooth.com/en/article/doi/10.7498/aps.48.385 385-388 //www.getgobooth.com/en/article/doi/10.7498/aps.48.389 Author(s): LV JUN-LI, WANG YONG-JIU <br/><p>Three kinds of characteristic surfaces of the charged axially nonstationary black hole are studied,namely,the event horizon,the apparent horizon and the time-like limit surface-The new results are shown when mass and charge of the black hole vary-</p> <br/>Acta Physica Sinica. 1999 48(3): 389-394. Published 1999-03-20 Author(s): LV JUN-LI, WANG YONG-JIU <br/><p>Three kinds of characteristic surfaces of the charged axially nonstationary black hole are studied,namely,the event horizon,the apparent horizon and the time-like limit surface-The new results are shown when mass and charge of the black hole vary-</p> <br/>Acta Physica Sinica. 1999 48(3): 389-394. Published 1999-03-20 CHARCTERISTIC SURFACES OF THE CHARGED AXIALLY NONSTATIONARY BLACK HOLE LV JUN-LI, WANG YONG-JIU 1999-03-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1999 48(3): 389-394. article doi:10.7498/aps.48.389 10.7498/aps.48.389 Acta Physica Sinica 48 3 1999-03-20 //www.getgobooth.com/en/article/doi/10.7498/aps.48.389 389-394 //www.getgobooth.com/en/article/doi/10.7498/aps.48.395 Author(s): LUO ZHI-JIAN, ZHU JIAN-YANG <br/><p>By using of the brick-wall method,we calculate the free energy and the entropy of Dirac spinor field in Schwarzschild black hole-It shows that the entropy of Dirac field is proportional to the area of black hole horizon and the entropy of Dirac field is 7/2 times that of Klein-Gordon field-</p> <br/>Acta Physica Sinica. 1999 48(3): 395-401. Published 1999-03-20 Author(s): LUO ZHI-JIAN, ZHU JIAN-YANG <br/><p>By using of the brick-wall method,we calculate the free energy and the entropy of Dirac spinor field in Schwarzschild black hole-It shows that the entropy of Dirac field is proportional to the area of black hole horizon and the entropy of Dirac field is 7/2 times that of Klein-Gordon field-</p> <br/>Acta Physica Sinica. 1999 48(3): 395-401. Published 1999-03-20 ENTROPY OF THE DIRAC FIELD IN SCHWARZSCHILD BLACK HOLE LUO ZHI-JIAN, ZHU JIAN-YANG 1999-03-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1999 48(3): 395-401. article doi:10.7498/aps.48.395 10.7498/aps.48.395 Acta Physica Sinica 48 3 1999-03-20 //www.getgobooth.com/en/article/doi/10.7498/aps.48.395 395-401 //www.getgobooth.com/en/article/doi/10.7498/aps.48.402 Author(s): LUO XIAO-SHU <br/><p>A new method is used to control chaos and hyperchaos in nonlinear system by phase space compression-As examples,the Henon map and Lorenz system as well as Rossler hyperchaotic system are researched numberically- The results show that the behavior of chaos and hyperchaos in the nonlinear system can be controlled effectivelly by phase space compression and 98P high periodic stable orbits can be obtained-</p> <br/>Acta Physica Sinica. 1999 48(3): 402-407. Published 1999-03-20 Author(s): LUO XIAO-SHU <br/><p>A new method is used to control chaos and hyperchaos in nonlinear system by phase space compression-As examples,the Henon map and Lorenz system as well as Rossler hyperchaotic system are researched numberically- The results show that the behavior of chaos and hyperchaos in the nonlinear system can be controlled effectivelly by phase space compression and 98P high periodic stable orbits can be obtained-</p> <br/>Acta Physica Sinica. 1999 48(3): 402-407. Published 1999-03-20 USING PHASE SPACE COMPRESSION TO CONTROL CHAOS AND HYPERCHAOS LUO XIAO-SHU 1999-03-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1999 48(3): 402-407. article doi:10.7498/aps.48.402 10.7498/aps.48.402 Acta Physica Sinica 48 3 1999-03-20 //www.getgobooth.com/en/article/doi/10.7498/aps.48.402 402-407 //www.getgobooth.com/en/article/doi/10.7498/aps.48.408 Author(s): HUA CUN-CAI, LU QI-SHAO <br/><p>In this paper,a new and simple method is presented for studying the semi-classical Laser-Lorenz equations with an injected signal-The pump parameter varies slowly with time,thus it induces delayed bifurcation and transient optical bistability-By scale balancing and approximating to the slowly-varying solution by that of the linearilized system, a scaling transition relation and a condition for transient optical bistability are given-The intervals of values of bifurcation and transition,and hysteresis loops of the transient optical bistability are given by numerical analysis-</p> <br/>Acta Physica Sinica. 1999 48(3): 408-415. Published 1999-03-20 Author(s): HUA CUN-CAI, LU QI-SHAO <br/><p>In this paper,a new and simple method is presented for studying the semi-classical Laser-Lorenz equations with an injected signal-The pump parameter varies slowly with time,thus it induces delayed bifurcation and transient optical bistability-By scale balancing and approximating to the slowly-varying solution by that of the linearilized system, a scaling transition relation and a condition for transient optical bistability are given-The intervals of values of bifurcation and transition,and hysteresis loops of the transient optical bistability are given by numerical analysis-</p> <br/>Acta Physica Sinica. 1999 48(3): 408-415. Published 1999-03-20 BIFURCATION AND OPTICAL BISTABILITY OF LASER-LORENZ EQUATIONS INDUCED BY A PUMP PARAMETER SLOWLY VARYING WITH TIME HUA CUN-CAI, LU QI-SHAO 1999-03-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1999 48(3): 408-415. article doi:10.7498/aps.48.408 10.7498/aps.48.408 Acta Physica Sinica 48 3 1999-03-20 //www.getgobooth.com/en/article/doi/10.7498/aps.48.408 408-415 //www.getgobooth.com/en/article/doi/10.7498/aps.48.416 Author(s): ZHAO JIAN-HUA, LIU RI-PING, ZHOU ZHEN-HUA, ZHANG XIANG-YI, ZHANG MING, XU YING-FAN, WANG WEN-KUI <br/><p>A new way for the study of diffusion processes in liquid metals in solid/liquid-liquid/solid trilayer systems is proposed-The design of this kind of trilayers enables diffusion processes to take place,without effect of gravity-induced convection and Marangoni-convection-The Ta/Zn-Sn/Si trilayers were selected as an example and the interdiffusion of liquid zinc and tin at 500℃ was investigated-</p> <br/>Acta Physica Sinica. 1999 48(3): 416-420. Published 1999-03-20 Author(s): ZHAO JIAN-HUA, LIU RI-PING, ZHOU ZHEN-HUA, ZHANG XIANG-YI, ZHANG MING, XU YING-FAN, WANG WEN-KUI <br/><p>A new way for the study of diffusion processes in liquid metals in solid/liquid-liquid/solid trilayer systems is proposed-The design of this kind of trilayers enables diffusion processes to take place,without effect of gravity-induced convection and Marangoni-convection-The Ta/Zn-Sn/Si trilayers were selected as an example and the interdiffusion of liquid zinc and tin at 500℃ was investigated-</p> <br/>Acta Physica Sinica. 1999 48(3): 416-420. Published 1999-03-20 A NEW WAY FOR MEASURING INTERDIFFUSION COEFFICIENT OF LIQUID METAL——SOLID/LIQUID-LIQUID/SOLID TRILAYER SYSTEM ZHAO JIAN-HUA, LIU RI-PING, ZHOU ZHEN-HUA, ZHANG XIANG-YI, ZHANG MING, XU YING-FAN, WANG WEN-KUI 1999-03-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1999 48(3): 416-420. article doi:10.7498/aps.48.416 10.7498/aps.48.416 Acta Physica Sinica 48 3 1999-03-20 //www.getgobooth.com/en/article/doi/10.7498/aps.48.416 416-420 //www.getgobooth.com/en/article/doi/10.7498/aps.48.421 Author(s): CHEN GANG, ZHU ZHEN-GANG, SHUI JIA-PENG <br/><p>The principle of the viscosity measurement of liquids with a forced vibration torsion pendulum is studied in this paper-The parameters of the testing system was determined by a 3-parameter model containing a Voigt unit,and the feasibility of the corresponding 4-parameter model of the measuring system,in which a liquid sample has been introduced to measure its viscosity,is then verified-It is proposed,based on the experimental results,that the measuring system is reliable-</p> <br/>Acta Physica Sinica. 1999 48(3): 421-425. Published 1999-03-20 Author(s): CHEN GANG, ZHU ZHEN-GANG, SHUI JIA-PENG <br/><p>The principle of the viscosity measurement of liquids with a forced vibration torsion pendulum is studied in this paper-The parameters of the testing system was determined by a 3-parameter model containing a Voigt unit,and the feasibility of the corresponding 4-parameter model of the measuring system,in which a liquid sample has been introduced to measure its viscosity,is then verified-It is proposed,based on the experimental results,that the measuring system is reliable-</p> <br/>Acta Physica Sinica. 1999 48(3): 421-425. Published 1999-03-20 STUDY ON THE PRINCIPLE OF THE VISCOSITY MEASUREMENT OF LIQUIDS WITH A FORCED-VIBRATION TORSION PENDULUM CHEN GANG, ZHU ZHEN-GANG, SHUI JIA-PENG 1999-03-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1999 48(3): 421-425. article doi:10.7498/aps.48.421 10.7498/aps.48.421 Acta Physica Sinica 48 3 1999-03-20 //www.getgobooth.com/en/article/doi/10.7498/aps.48.421 421-425 //www.getgobooth.com/en/article/doi/10.7498/aps.48.426 Author(s): SHEN SHUI-FA, WANG ZI-XING, SHI SHUANG-HUI, GU JIA-HUI, LIU JING-YI <br/><p>The angular momentum projection shell model is applied to the nucleus 129La- The results of theoretical calculations about the one-quasiproton bands are compared with experiment data,the agreement with the yrast πh11/2 band and the πg7/2 band is satisfactory- We also assign the πg7/2［νh11/2］2 configuration with an oblate shape for one of the bands of 129La-</p> <br/>Acta Physica Sinica. 1999 48(3): 426-432. Published 1999-03-20 Author(s): SHEN SHUI-FA, WANG ZI-XING, SHI SHUANG-HUI, GU JIA-HUI, LIU JING-YI <br/><p>The angular momentum projection shell model is applied to the nucleus 129La- The results of theoretical calculations about the one-quasiproton bands are compared with experiment data,the agreement with the yrast πh11/2 band and the πg7/2 band is satisfactory- We also assign the πg7/2［νh11/2］2 configuration with an oblate shape for one of the bands of 129La-</p> <br/>Acta Physica Sinica. 1999 48(3): 426-432. Published 1999-03-20 STUDY OF ONE-QUASIPROTON BANDS OF 129La USINGTHE ANGULAR MOMENTUM PROJECTION SHELL MODEL SHEN SHUI-FA, WANG ZI-XING, SHI SHUANG-HUI, GU JIA-HUI, LIU JING-YI 1999-03-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1999 48(3): 426-432. article doi:10.7498/aps.48.426 10.7498/aps.48.426 Acta Physica Sinica 48 3 1999-03-20 //www.getgobooth.com/en/article/doi/10.7498/aps.48.426 426-432 //www.getgobooth.com/en/article/doi/10.7498/aps.48.433 Author(s): WEN JIA-YAN, ZHENG REN-RONG, ZHU SHUN-QUAN <br/><p>The yrast bands of odd-odd nuclei in A=80 region are calculated by using the axial rotor plus two quasipaticles model- The results coincide with the experimental data and the point of signature inversion is reproduced accurately-</p> <br/>Acta Physica Sinica. 1999 48(3): 433-437. Published 1999-03-20 Author(s): WEN JIA-YAN, ZHENG REN-RONG, ZHU SHUN-QUAN <br/><p>The yrast bands of odd-odd nuclei in A=80 region are calculated by using the axial rotor plus two quasipaticles model- The results coincide with the experimental data and the point of signature inversion is reproduced accurately-</p> <br/>Acta Physica Sinica. 1999 48(3): 433-437. Published 1999-03-20 CALCULATION OF YRAST BANDS FOR ODD-ODD NUCLEI IN A=80 REGION WEN JIA-YAN, ZHENG REN-RONG, ZHU SHUN-QUAN 1999-03-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1999 48(3): 433-437. article doi:10.7498/aps.48.433 10.7498/aps.48.433 Acta Physica Sinica 48 3 1999-03-20 //www.getgobooth.com/en/article/doi/10.7498/aps.48.433 433-437 //www.getgobooth.com/en/article/doi/10.7498/aps.48.438 Author(s): ZHENG YU-JUN, DING SHI-LIANG <br/><p>Dynamical symmetry group for highly excited vibrational spectra of triatomic molecules has been studied-The results showed that the dynamicsl symmetry of tiratomic molecules are U1(4)U2(4)-Therefore,the Hamiltonian of triatomic molecules can be writen as the sum of elements of Lie algebra U1(4)U2(4)- And the eigenvalue of molecular Hamiltonian can be obtained by Lie algebraic treatment-</p> <br/>Acta Physica Sinica. 1999 48(3): 438-445. Published 1999-03-20 Author(s): ZHENG YU-JUN, DING SHI-LIANG <br/><p>Dynamical symmetry group for highly excited vibrational spectra of triatomic molecules has been studied-The results showed that the dynamicsl symmetry of tiratomic molecules are U1(4)U2(4)-Therefore,the Hamiltonian of triatomic molecules can be writen as the sum of elements of Lie algebra U1(4)U2(4)- And the eigenvalue of molecular Hamiltonian can be obtained by Lie algebraic treatment-</p> <br/>Acta Physica Sinica. 1999 48(3): 438-445. Published 1999-03-20 DYNAMICAL SYMMETRY GROUP FOR VIBRATIONAL SPECTRA OF TRIATOMIC MOLECULES ZHENG YU-JUN, DING SHI-LIANG 1999-03-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1999 48(3): 438-445. article doi:10.7498/aps.48.438 10.7498/aps.48.438 Acta Physica Sinica 48 3 1999-03-20 //www.getgobooth.com/en/article/doi/10.7498/aps.48.438 438-445 //www.getgobooth.com/en/article/doi/10.7498/aps.48.446 Author(s): LI QUAN-XIN, ZHANG QUN, SHU JI-NIAN, XU YE-PING, SONG QIN-HUA, CHEN CONG-XIANG, YU SHU-QIN, MA XING-XIAO <br/><p>In this paper,(2+1) resonance-enhanced multiphoton ionization(REMPI) spectra of CF radical between 260—360nm have been investigated- CF radicals were produced by a pulsed dc discharge in the mixtures of Ar/CF4,Ar/CF2Cl2 or Ar/CF3COOH-A new vibrational progression of 5p Rydberg state with band origin of 67746cm-1 were observed between 260—305nm-The vibrational frequency ω′=1848cm-1,inharmonic constant ωe χe′=18-5cm-1 and the quantum defect δ=0-625 have been determined by the assigned REMPI spectra- Furthermore,the (2+1)REMPI spectra of CF radical between 310—360nm,were also observed and assigned as 3p(v′=2—6) resonant excitation- The related spectroscopic constants have been derived-</p> <br/>Acta Physica Sinica. 1999 48(3): 446-452. Published 1999-03-20 Author(s): LI QUAN-XIN, ZHANG QUN, SHU JI-NIAN, XU YE-PING, SONG QIN-HUA, CHEN CONG-XIANG, YU SHU-QIN, MA XING-XIAO <br/><p>In this paper,(2+1) resonance-enhanced multiphoton ionization(REMPI) spectra of CF radical between 260—360nm have been investigated- CF radicals were produced by a pulsed dc discharge in the mixtures of Ar/CF4,Ar/CF2Cl2 or Ar/CF3COOH-A new vibrational progression of 5p Rydberg state with band origin of 67746cm-1 were observed between 260—305nm-The vibrational frequency ω′=1848cm-1,inharmonic constant ωe χe′=18-5cm-1 and the quantum defect δ=0-625 have been determined by the assigned REMPI spectra- Furthermore,the (2+1)REMPI spectra of CF radical between 310—360nm,were also observed and assigned as 3p(v′=2—6) resonant excitation- The related spectroscopic constants have been derived-</p> <br/>Acta Physica Sinica. 1999 48(3): 446-452. Published 1999-03-20 STUDY ON THE TWO-PHOTON RESONACE-ENHANCED MULTIPHOTON IONIZATION OF CF RADICALS: DETERMINATION AND ANALYSIS OF 5p RYDBERG STATE LI QUAN-XIN, ZHANG QUN, SHU JI-NIAN, XU YE-PING, SONG QIN-HUA, CHEN CONG-XIANG, YU SHU-QIN, MA XING-XIAO 1999-03-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1999 48(3): 446-452. article doi:10.7498/aps.48.446 10.7498/aps.48.446 Acta Physica Sinica 48 3 1999-03-20 //www.getgobooth.com/en/article/doi/10.7498/aps.48.446 446-452 //www.getgobooth.com/en/article/doi/10.7498/aps.48.453 Author(s): ZHANG SUI-MENG, CHEN ZHANG-JIN, XU KE-ZUN <br/><p>Based on the modified three-body Sommerfeld parameters,the effective shield of the residual electron in the final state of He+ is further modified for (e,2e) processes- Such a modification represents a dynamic screening of the four bodies in the final state- The triple differential cross sections for electron impact ionization of atomic helium at an incident energy of 50eV in the asymmetric geometry are calculated by use of the modified Sommerfeld parameters-The results were compared with those of the absolute measurements and the only existing theoretical results of the convergent colse-coupling method-It was found that the present results give a better description for the experimental data at fixed ejected energy of 10eV-</p> <br/>Acta Physica Sinica. 1999 48(3): 453-460. Published 1999-03-20 Author(s): ZHANG SUI-MENG, CHEN ZHANG-JIN, XU KE-ZUN <br/><p>Based on the modified three-body Sommerfeld parameters,the effective shield of the residual electron in the final state of He+ is further modified for (e,2e) processes- Such a modification represents a dynamic screening of the four bodies in the final state- The triple differential cross sections for electron impact ionization of atomic helium at an incident energy of 50eV in the asymmetric geometry are calculated by use of the modified Sommerfeld parameters-The results were compared with those of the absolute measurements and the only existing theoretical results of the convergent colse-coupling method-It was found that the present results give a better description for the experimental data at fixed ejected energy of 10eV-</p> <br/>Acta Physica Sinica. 1999 48(3): 453-460. Published 1999-03-20 DYNAMIC SCREENING OF THE (e,2e) PROCESSES FOR LOW-ENERGY ELECTRON IMPACT IONIZATION OF HELIUM ZHANG SUI-MENG, CHEN ZHANG-JIN, XU KE-ZUN 1999-03-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1999 48(3): 453-460. article doi:10.7498/aps.48.453 10.7498/aps.48.453 Acta Physica Sinica 48 3 1999-03-20 //www.getgobooth.com/en/article/doi/10.7498/aps.48.453 453-460 //www.getgobooth.com/en/article/doi/10.7498/aps.48.461 Author(s): LI XIANG-TING, MA HONG-RU <br/><p>Using Bergman representation theory,we derived the first principle formulation of electric potential of binary composites,and calculated the electric potential distributions for bct,fcc and bcc structures-</p> <br/>Acta Physica Sinica. 1999 48(3): 461-467. Published 1999-03-20 Author(s): LI XIANG-TING, MA HONG-RU <br/><p>Using Bergman representation theory,we derived the first principle formulation of electric potential of binary composites,and calculated the electric potential distributions for bct,fcc and bcc structures-</p> <br/>Acta Physica Sinica. 1999 48(3): 461-467. Published 1999-03-20 ELECTRIC POTENTIAL CALCULATION OF COMPOSITES BY BERGMAN METHOD LI XIANG-TING, MA HONG-RU 1999-03-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1999 48(3): 461-467. article doi:10.7498/aps.48.461 10.7498/aps.48.461 Acta Physica Sinica 48 3 1999-03-20 //www.getgobooth.com/en/article/doi/10.7498/aps.48.461 461-467 //www.getgobooth.com/en/article/doi/10.7498/aps.48.468 Author(s): XIAO LING, DING GANG, JING CHUN-YANG, LIN FU-CHENG <br/><p>Based on the Bloch-Maxwell equation,the three-dimensional model for the double-pulse propagation in a two-level system was set up-The propagation of the double pulses with different areas has been described and compared to that of the single pulse-The pulse mergence has been found in the double-pulse propagation-</p> <br/>Acta Physica Sinica. 1999 48(3): 468-473. Published 1999-03-20 Author(s): XIAO LING, DING GANG, JING CHUN-YANG, LIN FU-CHENG <br/><p>Based on the Bloch-Maxwell equation,the three-dimensional model for the double-pulse propagation in a two-level system was set up-The propagation of the double pulses with different areas has been described and compared to that of the single pulse-The pulse mergence has been found in the double-pulse propagation-</p> <br/>Acta Physica Sinica. 1999 48(3): 468-473. Published 1999-03-20 PROPAGATION PROPERTIES OF DOUBLE LASER PULSE IN COHERENT MEDIUM XIAO LING, DING GANG, JING CHUN-YANG, LIN FU-CHENG 1999-03-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1999 48(3): 468-473. article doi:10.7498/aps.48.468 10.7498/aps.48.468 Acta Physica Sinica 48 3 1999-03-20 //www.getgobooth.com/en/article/doi/10.7498/aps.48.468 468-473 //www.getgobooth.com/en/article/doi/10.7498/aps.48.474 Author(s): CHEN ZHI-JIAN, WANG SHU-FENG, WANG FENG, HUANG ZHI-WEN, GONG QI-HUANG, ZHANG ZHI-JIE, CHEN YI-WANG, CHEN HUI-YING <br/><p>The two-beam coupling gain and phase-shift were measured in the low glass transition temperature photorefractive composites of poly(N-Vinylcarbazole) doped with plasticizer N-ethylcarbazole,electro-optic chromophore 2,5-dimethyl-4-(p-nitrophenylazo) anisole and various contents of photosensitizer fullerene C60-The influence of photosensitizer on the photorefractive behavior was studied-</p> <br/>Acta Physica Sinica. 1999 48(3): 474-479. Published 1999-03-20 Author(s): CHEN ZHI-JIAN, WANG SHU-FENG, WANG FENG, HUANG ZHI-WEN, GONG QI-HUANG, ZHANG ZHI-JIE, CHEN YI-WANG, CHEN HUI-YING <br/><p>The two-beam coupling gain and phase-shift were measured in the low glass transition temperature photorefractive composites of poly(N-Vinylcarbazole) doped with plasticizer N-ethylcarbazole,electro-optic chromophore 2,5-dimethyl-4-(p-nitrophenylazo) anisole and various contents of photosensitizer fullerene C60-The influence of photosensitizer on the photorefractive behavior was studied-</p> <br/>Acta Physica Sinica. 1999 48(3): 474-479. Published 1999-03-20 INFLUENCE OF PHOTOSENSITIZER IN LOW GLASS TRANSITION TEMPERATURE PHOTOREFRACTIVE POLYMERIC COMPOSITE CHEN ZHI-JIAN, WANG SHU-FENG, WANG FENG, HUANG ZHI-WEN, GONG QI-HUANG, ZHANG ZHI-JIE, CHEN YI-WANG, CHEN HUI-YING 1999-03-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1999 48(3): 474-479. article doi:10.7498/aps.48.474 10.7498/aps.48.474 Acta Physica Sinica 48 3 1999-03-20 //www.getgobooth.com/en/article/doi/10.7498/aps.48.474 474-479 //www.getgobooth.com/en/article/doi/10.7498/aps.48.480 Author(s): TANG YI, YAN JIA-REN, ZHANG KAI-WANG, CHEN ZHEN-HUA <br/><p>Making use of the method of multiple scales from the classical perturbation theory and the general method of Laplace transformation from the mathematical physics methods, we have solved the perturbation problem for sine-Gordon equation, and obtained the fist-order correction containing no secular terms, as well as the parameters slowly varied with time-</p> <br/>Acta Physica Sinica. 1999 48(3): 480-484. Published 1999-03-20 Author(s): TANG YI, YAN JIA-REN, ZHANG KAI-WANG, CHEN ZHEN-HUA <br/><p>Making use of the method of multiple scales from the classical perturbation theory and the general method of Laplace transformation from the mathematical physics methods, we have solved the perturbation problem for sine-Gordon equation, and obtained the fist-order correction containing no secular terms, as well as the parameters slowly varied with time-</p> <br/>Acta Physica Sinica. 1999 48(3): 480-484. Published 1999-03-20 PERTURBATION THEORY FOR SINE-GORDON EQUATION TANG YI, YAN JIA-REN, ZHANG KAI-WANG, CHEN ZHEN-HUA 1999-03-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1999 48(3): 480-484. article doi:10.7498/aps.48.480 10.7498/aps.48.480 Acta Physica Sinica 48 3 1999-03-20 //www.getgobooth.com/en/article/doi/10.7498/aps.48.480 480-484 //www.getgobooth.com/en/article/doi/10.7498/aps.48.485 Author(s): CHEN QI-FENG, CAI LING-CANG, JING FU-QIAN, CHEN DONG-QUAN <br/><p>The shock-compression properties of liquid deuterium and hydrogen are studied by means of the variational fluid perturbation theory- The present theoretical results are in excellent agreement with RRY theory and Nellis'experimental data- The present calculation for the shock temperatures are higher than Holmes' experimental data, the reason for the apparent agreement of the pressures and for the higher shock tempratures are explained-</p> <br/>Acta Physica Sinica. 1999 48(3): 485-490. Published 1999-03-20 Author(s): CHEN QI-FENG, CAI LING-CANG, JING FU-QIAN, CHEN DONG-QUAN <br/><p>The shock-compression properties of liquid deuterium and hydrogen are studied by means of the variational fluid perturbation theory- The present theoretical results are in excellent agreement with RRY theory and Nellis'experimental data- The present calculation for the shock temperatures are higher than Holmes' experimental data, the reason for the apparent agreement of the pressures and for the higher shock tempratures are explained-</p> <br/>Acta Physica Sinica. 1999 48(3): 485-490. Published 1999-03-20 THEORETICAL CALCULATION OF THE HUGONIOT CURVES FOR LIQUID DEUTERIUM AND HYDROGEN CHEN QI-FENG, CAI LING-CANG, JING FU-QIAN, CHEN DONG-QUAN 1999-03-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1999 48(3): 485-490. article doi:10.7498/aps.48.485 10.7498/aps.48.485 Acta Physica Sinica 48 3 1999-03-20 //www.getgobooth.com/en/article/doi/10.7498/aps.48.485 485-490 //www.getgobooth.com/en/article/doi/10.7498/aps.48.491 Author(s): LIN LIN, WU JIN-LEI <br/><p>Metallic nanoparticles complex thin film is a new kind of promising photoemissive thin film because of its perfect photoemissive properties and extremely fast optical response- We obtained a light-emitting Ag-BaO nanometer thin film using vacuum deposition method- Red-blue-violet range light emission was observed from its photolumine-scence(PL)- We believe that the origin of PL of Ag-BaO thin film is the contribution of the Ag nanoparticles- Compared with its ultraviolet-visible absorption spectra, the mechanism of its PL covering different visible light ranges was analyzed- </p> <br/>Acta Physica Sinica. 1999 48(3): 491-496. Published 1999-03-20 Author(s): LIN LIN, WU JIN-LEI <br/><p>Metallic nanoparticles complex thin film is a new kind of promising photoemissive thin film because of its perfect photoemissive properties and extremely fast optical response- We obtained a light-emitting Ag-BaO nanometer thin film using vacuum deposition method- Red-blue-violet range light emission was observed from its photolumine-scence(PL)- We believe that the origin of PL of Ag-BaO thin film is the contribution of the Ag nanoparticles- Compared with its ultraviolet-visible absorption spectra, the mechanism of its PL covering different visible light ranges was analyzed- </p> <br/>Acta Physica Sinica. 1999 48(3): 491-496. Published 1999-03-20 STUDY OF RED-BLUE-VIOLET PHOTOLUMINESCENCE FROM Ag-BaO NANOMETER THIN FILM(Ⅰ) LIN LIN, WU JIN-LEI 1999-03-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1999 48(3): 491-496. article doi:10.7498/aps.48.491 10.7498/aps.48.491 Acta Physica Sinica 48 3 1999-03-20 //www.getgobooth.com/en/article/doi/10.7498/aps.48.491 491-496 //www.getgobooth.com/en/article/doi/10.7498/aps.48.497 Author(s): ZHANG KAI-WANG, YUAN HUI-QIU, ZHONG JIAN-XIN <br/><p>The electronic dynamics of an incommensurate system have been studied with site potentials Vn=λtanh［Acos(2πσn)］/tahnA, where σ=(5-1)/2. By analyzing the wave function, we find the extended eigenstates are similar to the Bloch waves, and critical states occur in some Hamiltonian parameter regions. Much attention is paid to the long-time behavior of the autocorrelation function C(t) and mean square displacement d(t). When all states in the system become extended, C(t)～t-1 and d(t)～t1. In the regime with absolute localized states, C(t)～t0 and d(t)～t0. Between these two extremes, there exists a complex phase regime in which extended states, critical states and localized states coexist, and the behavior of C(t) is related to the initial site, but with d(t)～t1. Moreover, the relation between C(t) and the local spectral probability R(l) have been studied.</p> <br/>Acta Physica Sinica. 1999 48(3): 497-504. Published 1999-03-20 Author(s): ZHANG KAI-WANG, YUAN HUI-QIU, ZHONG JIAN-XIN <br/><p>The electronic dynamics of an incommensurate system have been studied with site potentials Vn=λtanh［Acos(2πσn)］/tahnA, where σ=(5-1)/2. By analyzing the wave function, we find the extended eigenstates are similar to the Bloch waves, and critical states occur in some Hamiltonian parameter regions. Much attention is paid to the long-time behavior of the autocorrelation function C(t) and mean square displacement d(t). When all states in the system become extended, C(t)～t-1 and d(t)～t1. In the regime with absolute localized states, C(t)～t0 and d(t)～t0. Between these two extremes, there exists a complex phase regime in which extended states, critical states and localized states coexist, and the behavior of C(t) is related to the initial site, but with d(t)～t1. Moreover, the relation between C(t) and the local spectral probability R(l) have been studied.</p> <br/>Acta Physica Sinica. 1999 48(3): 497-504. Published 1999-03-20 ELECTRONIC DYNAMICS IN AN INCOMMENSURATE SYSTEM ZHANG KAI-WANG, YUAN HUI-QIU, ZHONG JIAN-XIN 1999-03-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1999 48(3): 497-504. article doi:10.7498/aps.48.497 10.7498/aps.48.497 Acta Physica Sinica 48 3 1999-03-20 //www.getgobooth.com/en/article/doi/10.7498/aps.48.497 497-504 //www.getgobooth.com/en/article/doi/10.7498/aps.48.505 Author(s): LI GUANG, TANG PING, SUN XIA, JIANG YONG, CHEN YUE, WANG SHENG, HUANG ZHEN, YUAN SONG-LIU <br/><p>The temperature dependence of resistance in the La2/3Ca1/3Mn1-xCuxO3(x=0 and 0.15) system at temperatures much lower than Curie temperature has been experimentally studied. It is found that a resistance minimum obviously appears in the zero-field R-T curve of the Cu-doped sample. Such a resistance minimum disappears when a magnetic field is applied to the sample. Based on Kondo theory, a quantitative comparison between the theory and the experimental data has been presented. It is shown that the experimental observation can be well understood within the framework of Kondo theory.</p> <br/>Acta Physica Sinica. 1999 48(3): 505-510. Published 1999-03-20 Author(s): LI GUANG, TANG PING, SUN XIA, JIANG YONG, CHEN YUE, WANG SHENG, HUANG ZHEN, YUAN SONG-LIU <br/><p>The temperature dependence of resistance in the La2/3Ca1/3Mn1-xCuxO3(x=0 and 0.15) system at temperatures much lower than Curie temperature has been experimentally studied. It is found that a resistance minimum obviously appears in the zero-field R-T curve of the Cu-doped sample. Such a resistance minimum disappears when a magnetic field is applied to the sample. Based on Kondo theory, a quantitative comparison between the theory and the experimental data has been presented. It is shown that the experimental observation can be well understood within the framework of Kondo theory.</p> <br/>Acta Physica Sinica. 1999 48(3): 505-510. Published 1999-03-20 LOW-TEMPERATURE RESISTANCE MINIMUM AND ITS ORIGIN IN La2/3Ca1/3Mn1-xCuxO3(x=0.15) SYSTEM LI GUANG, TANG PING, SUN XIA, JIANG YONG, CHEN YUE, WANG SHENG, HUANG ZHEN, YUAN SONG-LIU 1999-03-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1999 48(3): 505-510. article doi:10.7498/aps.48.505 10.7498/aps.48.505 Acta Physica Sinica 48 3 1999-03-20 //www.getgobooth.com/en/article/doi/10.7498/aps.48.505 505-510 //www.getgobooth.com/en/article/doi/10.7498/aps.48.511 Author(s): DONG ZHENG-CHAO, ZHAO SHU-YU <br/><p>Taking into account the quantum size effects and considering three types of scattering from bulk impurities,rough surfaces and rough interfaces, we use the quantum-statistical Greens function approach and Kubo theory to calculate the giant magnetoresistance (GMR) in magnetic multilayered structures.Our calculations can reproduce the main features of GMR experiment, including the oscillations of GMR with nonmagnetic thickness, and the GMR increases with increasing number of bilayer N of the (Fe/Cr)N/Fe system.Moreover,whether or not additive are the parts of scattering from the impurities, surfaces and interfaces is also discussed. </p> <br/>Acta Physica Sinica. 1999 48(3): 511-519. Published 1999-03-20 Author(s): DONG ZHENG-CHAO, ZHAO SHU-YU <br/><p>Taking into account the quantum size effects and considering three types of scattering from bulk impurities,rough surfaces and rough interfaces, we use the quantum-statistical Greens function approach and Kubo theory to calculate the giant magnetoresistance (GMR) in magnetic multilayered structures.Our calculations can reproduce the main features of GMR experiment, including the oscillations of GMR with nonmagnetic thickness, and the GMR increases with increasing number of bilayer N of the (Fe/Cr)N/Fe system.Moreover,whether or not additive are the parts of scattering from the impurities, surfaces and interfaces is also discussed. </p> <br/>Acta Physica Sinica. 1999 48(3): 511-519. Published 1999-03-20 GIANT MAGNETORESISTANCE EFFECTS OF MAGNETIC MULTILAYERED FILMS SYSTEM DONG ZHENG-CHAO, ZHAO SHU-YU 1999-03-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1999 48(3): 511-519. article doi:10.7498/aps.48.511 10.7498/aps.48.511 Acta Physica Sinica 48 3 1999-03-20 //www.getgobooth.com/en/article/doi/10.7498/aps.48.511 511-519 //www.getgobooth.com/en/article/doi/10.7498/aps.48.520 Author(s): WANG YI-ZHONG, HU JI-FAN, ZHANG SHAO-YING, ZHANG HONG-WEI, SHEN BAO-GEN <br/><p>The melt spun ribbons of nanocomposite Nd9Fe85.5-xCoxNb1B4.5(x＝0-16) have been prepared by rapid quenching and post heat treatment. The best magnetic properties obtained in Nd9Fe84.5Nb1B4.5 ribbons are as follows:(BH)max＝156kJ/m3,Jr＝1.11T and μ0HcJ＝0.68T.It is shown that the melt spun ribbons consist of both 2∶14∶1 compound and α-Fe(Co,Nb) phases with mean grain sizes smaller than 30nm. The effect of exchange coupling between the nanostructure grains of Nd2(Fe,Co,Nb)14B and α-Fe(Co,Nb) are observed clearly. The Curie temperature enhancement is about 10K and the largest reduced remanence achieved 0.776.It is also indicated that there is a close relation between the reduced remanence and the mean grain size of α-Fe phase. The smaller the mean grain size of α-Fe phase, the greater the remanence enhancement. The Curie temperature of the melt spun ribbons increases quickly with a rate of 11.3K/at%. The coercivity, remanence and maximum energy product decrease monotonically with increasing Co content for the Nd9Fe85.5-xCoxNb1B4.5 ribbons.</p> <br/>Acta Physica Sinica. 1999 48(3): 520-526. Published 1999-03-20 Author(s): WANG YI-ZHONG, HU JI-FAN, ZHANG SHAO-YING, ZHANG HONG-WEI, SHEN BAO-GEN <br/><p>The melt spun ribbons of nanocomposite Nd9Fe85.5-xCoxNb1B4.5(x＝0-16) have been prepared by rapid quenching and post heat treatment. The best magnetic properties obtained in Nd9Fe84.5Nb1B4.5 ribbons are as follows:(BH)max＝156kJ/m3,Jr＝1.11T and μ0HcJ＝0.68T.It is shown that the melt spun ribbons consist of both 2∶14∶1 compound and α-Fe(Co,Nb) phases with mean grain sizes smaller than 30nm. The effect of exchange coupling between the nanostructure grains of Nd2(Fe,Co,Nb)14B and α-Fe(Co,Nb) are observed clearly. The Curie temperature enhancement is about 10K and the largest reduced remanence achieved 0.776.It is also indicated that there is a close relation between the reduced remanence and the mean grain size of α-Fe phase. The smaller the mean grain size of α-Fe phase, the greater the remanence enhancement. The Curie temperature of the melt spun ribbons increases quickly with a rate of 11.3K/at%. The coercivity, remanence and maximum energy product decrease monotonically with increasing Co content for the Nd9Fe85.5-xCoxNb1B4.5 ribbons.</p> <br/>Acta Physica Sinica. 1999 48(3): 520-526. Published 1999-03-20 MAGNETIC PROPERTIES OF Nd-Fe(Co,Nb)-B EXCHANGE COUPLING MAGNET WANG YI-ZHONG, HU JI-FAN, ZHANG SHAO-YING, ZHANG HONG-WEI, SHEN BAO-GEN 1999-03-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1999 48(3): 520-526. article doi:10.7498/aps.48.520 10.7498/aps.48.520 Acta Physica Sinica 48 3 1999-03-20 //www.getgobooth.com/en/article/doi/10.7498/aps.48.520 520-526 //www.getgobooth.com/en/article/doi/10.7498/aps.48.527 Author(s): HOU BI-HUI, XU YUN-XIA, HAN SHI-YING, YI SU, SHEN BAO-GEN <br/><p>When the fraction of inordinate component on the interface or/and surface in nanostructured FeAl is comparable to that of crystal grain which is wrapped up in the former,and there exists Fe-Al-Fe surperexchange or/and Fe-Fe exchange interactions in the inordinate component on the interface or/and surface, a nonmagnetism—magnetism transition between polycrystall FeAl alloy and nanostructured FeAl would result.There was no signal of magnetic resonance in the bulk polycrystal FeAl from the experimental results of electron spin resonance (ESR) in X wave band with a frequancy of 9.48GHz.The ferromagnetic resonance (FMR) signals were observed in the nanostructured samples, whose line widths ΔHpp were over 8×104A/m.Otherwise,an ESR fine structural signal of double peaks of Fe2+ ion was also observed in nanocrystal line samples, the interval of the two peaks was 1.316×105A/m,and the ΔHpp of each peak was smaller than 800A/m.The configuration of the paramagnetic Fe2+ was 3d54s1, and spin quantum number was S＝1,its zero-field splitting D was 2.448GHz,or 10.12×10-6eV.An overlap of the ESR double peaks of paramagnetic Fe2+ and the wide FMR peak resulted in two sharp peaks like resonant singularities on the FMR spectrum.</p> <br/>Acta Physica Sinica. 1999 48(3): 527-532. Published 1999-03-20 Author(s): HOU BI-HUI, XU YUN-XIA, HAN SHI-YING, YI SU, SHEN BAO-GEN <br/><p>When the fraction of inordinate component on the interface or/and surface in nanostructured FeAl is comparable to that of crystal grain which is wrapped up in the former,and there exists Fe-Al-Fe surperexchange or/and Fe-Fe exchange interactions in the inordinate component on the interface or/and surface, a nonmagnetism—magnetism transition between polycrystall FeAl alloy and nanostructured FeAl would result.There was no signal of magnetic resonance in the bulk polycrystal FeAl from the experimental results of electron spin resonance (ESR) in X wave band with a frequancy of 9.48GHz.The ferromagnetic resonance (FMR) signals were observed in the nanostructured samples, whose line widths ΔHpp were over 8×104A/m.Otherwise,an ESR fine structural signal of double peaks of Fe2+ ion was also observed in nanocrystal line samples, the interval of the two peaks was 1.316×105A/m,and the ΔHpp of each peak was smaller than 800A/m.The configuration of the paramagnetic Fe2+ was 3d54s1, and spin quantum number was S＝1,its zero-field splitting D was 2.448GHz,or 10.12×10-6eV.An overlap of the ESR double peaks of paramagnetic Fe2+ and the wide FMR peak resulted in two sharp peaks like resonant singularities on the FMR spectrum.</p> <br/>Acta Physica Sinica. 1999 48(3): 527-532. Published 1999-03-20 MAGNETIC RESONANCE SPUCTRUM ANALYSIS IN NANOSTRUCTURED FeAl ALLOY HOU BI-HUI, XU YUN-XIA, HAN SHI-YING, YI SU, SHEN BAO-GEN 1999-03-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1999 48(3): 527-532. article doi:10.7498/aps.48.527 10.7498/aps.48.527 Acta Physica Sinica 48 3 1999-03-20 //www.getgobooth.com/en/article/doi/10.7498/aps.48.527 527-532 //www.getgobooth.com/en/article/doi/10.7498/aps.48.533 Author(s): ZHAO HUI, WANG YONG-SHENG, XU ZHENG, XU XU-RONG <br/><p>Based on the calculation about intervalley scattering rates in ZnS, intervalley transfer process in ZnS-type thin-film electroluminescent devices is investigated through Monte Carlo simulation. The transient process of intervalley transfer, the influence of electric field on intervalley distribution and the electron kinetic energy distributions in different valleys are obtained. We propose that high valley could store energy. These results could be used as the basic data on the study of electroluminescent process.</p> <br/>Acta Physica Sinica. 1999 48(3): 533-538. Published 1999-03-20 Author(s): ZHAO HUI, WANG YONG-SHENG, XU ZHENG, XU XU-RONG <br/><p>Based on the calculation about intervalley scattering rates in ZnS, intervalley transfer process in ZnS-type thin-film electroluminescent devices is investigated through Monte Carlo simulation. The transient process of intervalley transfer, the influence of electric field on intervalley distribution and the electron kinetic energy distributions in different valleys are obtained. We propose that high valley could store energy. These results could be used as the basic data on the study of electroluminescent process.</p> <br/>Acta Physica Sinica. 1999 48(3): 533-538. Published 1999-03-20 MONTE CARLO SIMULATION ON ELECTRON INTERVALLEY TRANSFER PROCESS IN ZnS-TYPE THIN-FILM ELECTROLUMINESCENT DEVICES ZHAO HUI, WANG YONG-SHENG, XU ZHENG, XU XU-RONG 1999-03-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1999 48(3): 533-538. article doi:10.7498/aps.48.533 10.7498/aps.48.533 Acta Physica Sinica 48 3 1999-03-20 //www.getgobooth.com/en/article/doi/10.7498/aps.48.533 533-538 //www.getgobooth.com/en/article/doi/10.7498/aps.48.539 Author(s): WANG QU-QUAN, ZHAO TONG-YUN, YANG BAI-FENG, NIU FENG, ZHOU ZHENG-GUO, XIONG GUI-GUANG, TIAN DE-CHENG <br/><p>(Ag,Au)/Si nanocomposite films were deposited using the rf co-sputtering method. The absorption coefficient of Ag/Si nanocomposite film was calculated based on the Maxwell-Garnett theory and differential effective medium(DEM) theory;the experimental results of spectra agreed with the DEM theory.And the possible microstructure and the reason why the plasma resonance absorption peaks were broadened have been discussed.</p> <br/>Acta Physica Sinica. 1999 48(3): 539-544. Published 1999-03-20 Author(s): WANG QU-QUAN, ZHAO TONG-YUN, YANG BAI-FENG, NIU FENG, ZHOU ZHENG-GUO, XIONG GUI-GUANG, TIAN DE-CHENG <br/><p>(Ag,Au)/Si nanocomposite films were deposited using the rf co-sputtering method. The absorption coefficient of Ag/Si nanocomposite film was calculated based on the Maxwell-Garnett theory and differential effective medium(DEM) theory;the experimental results of spectra agreed with the DEM theory.And the possible microstructure and the reason why the plasma resonance absorption peaks were broadened have been discussed.</p> <br/>Acta Physica Sinica. 1999 48(3): 539-544. Published 1999-03-20 MICROSTRUCTURE AND ABSORPTION SPECTRA OF (Ag,Au)/Si NANOCOMPOSITE FILM WANG QU-QUAN, ZHAO TONG-YUN, YANG BAI-FENG, NIU FENG, ZHOU ZHENG-GUO, XIONG GUI-GUANG, TIAN DE-CHENG 1999-03-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1999 48(3): 539-544. article doi:10.7498/aps.48.539 10.7498/aps.48.539 Acta Physica Sinica 48 3 1999-03-20 //www.getgobooth.com/en/article/doi/10.7498/aps.48.539 539-544 //www.getgobooth.com/en/article/doi/10.7498/aps.48.545 Author(s): CHEN BAO-JIU, QIN WEI-PING, WANG HAI-YU, XU WU, HUANG SHI-HUA <br/><p>Monte-Carlo simulation is applied to investigate energy transfer processes in luminescence. By simulating the static distribution of the Donor-Accepter transfer rates,we have got the decay of donor luminescence in static transfer model. The result coincides with that of Inokuti-Hirayama model. The influence of D—D transfer to donor luminescence decay is simulated and discussed for both the cases of independent and correlated D—D and D—A transfer rates.</p> <br/>Acta Physica Sinica. 1999 48(3): 545-549. Published 1999-03-20 Author(s): CHEN BAO-JIU, QIN WEI-PING, WANG HAI-YU, XU WU, HUANG SHI-HUA <br/><p>Monte-Carlo simulation is applied to investigate energy transfer processes in luminescence. By simulating the static distribution of the Donor-Accepter transfer rates,we have got the decay of donor luminescence in static transfer model. The result coincides with that of Inokuti-Hirayama model. The influence of D—D transfer to donor luminescence decay is simulated and discussed for both the cases of independent and correlated D—D and D—A transfer rates.</p> <br/>Acta Physica Sinica. 1999 48(3): 545-549. Published 1999-03-20 COMPUTER SIMULATION OF ENERGY TRANFER PROCESS CHEN BAO-JIU, QIN WEI-PING, WANG HAI-YU, XU WU, HUANG SHI-HUA 1999-03-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1999 48(3): 545-549. article doi:10.7498/aps.48.545 10.7498/aps.48.545 Acta Physica Sinica 48 3 1999-03-20 //www.getgobooth.com/en/article/doi/10.7498/aps.48.545 545-549 //www.getgobooth.com/en/article/doi/10.7498/aps.48.550 Author(s): CHAI CHANG-CHUN, YANG YIN-TANG, LI YUE-JIN, JIA HU-JUN, JI HUI-LIAN <br/><p>Plasma etching(PE) of cubic β-SiC single crystalline thin films produced via chemical vapor deposition(CVD) has been performed in SF6 and the SF6+O2 mixtures. Experimental results show that the maxima of etching rate are reached when gas mixing ratio is about 40%. The Auger energy spectra indicate that PE process in SF6 and the SF6+O2 mixtures does not yield a residual SiC with a C-rich surface. This technique and experimental results may serve as the foundation of fabricating various devices of SiC.</p> <br/>Acta Physica Sinica. 1999 48(3): 550-555. Published 1999-03-20 Author(s): CHAI CHANG-CHUN, YANG YIN-TANG, LI YUE-JIN, JIA HU-JUN, JI HUI-LIAN <br/><p>Plasma etching(PE) of cubic β-SiC single crystalline thin films produced via chemical vapor deposition(CVD) has been performed in SF6 and the SF6+O2 mixtures. Experimental results show that the maxima of etching rate are reached when gas mixing ratio is about 40%. The Auger energy spectra indicate that PE process in SF6 and the SF6+O2 mixtures does not yield a residual SiC with a C-rich surface. This technique and experimental results may serve as the foundation of fabricating various devices of SiC.</p> <br/>Acta Physica Sinica. 1999 48(3): 550-555. Published 1999-03-20 STUDY ON PLASMA ETCHING OF β-SiC THIN FILMS IN SF6 AND THE SF6+O2 MIXTURES CHAI CHANG-CHUN, YANG YIN-TANG, LI YUE-JIN, JIA HU-JUN, JI HUI-LIAN 1999-03-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1999 48(3): 550-555. article doi:10.7498/aps.48.550 10.7498/aps.48.550 Acta Physica Sinica 48 3 1999-03-20 //www.getgobooth.com/en/article/doi/10.7498/aps.48.550 550-555 //www.getgobooth.com/en/article/doi/10.7498/aps.48.556 Author(s): ZHANG XING-HONG, HU YU-SHENG, WU JIE, CHENG ZHI-QUN, XIA GUAN-QUN, XU YUAN-SEN, CHEN ZHANG-HAI, GUI YONG-SHENG, CHU JUN-HAO <br/><p>We have studied deep levels in AlGaInP emitter of AlGaInP/GaAs heterojunction bipolar transistor by deep-level transient spectroscopy and photoluminescence (PL) methods.Two deep levels were obtained with thermal activation energies of Ec-Et1＝0.42eV and Ec-Et2＝0.59eV,whose capture cross sections are 6.27×10-17cm2 and 6.49×10-20 cm2，where Et1 and Et2 are Si-related and O-related deep levels,respectively. The relationship between excitation power and PL peak intensity have revealed that nonradiative recombination centers of deep levels exist in AlGaInP.The current gain of AlGaInP/GaAs HBT decreases due to the existence of deep levels in AlGaInP.</p> <br/>Acta Physica Sinica. 1999 48(3): 556-560. Published 1999-03-20 Author(s): ZHANG XING-HONG, HU YU-SHENG, WU JIE, CHENG ZHI-QUN, XIA GUAN-QUN, XU YUAN-SEN, CHEN ZHANG-HAI, GUI YONG-SHENG, CHU JUN-HAO <br/><p>We have studied deep levels in AlGaInP emitter of AlGaInP/GaAs heterojunction bipolar transistor by deep-level transient spectroscopy and photoluminescence (PL) methods.Two deep levels were obtained with thermal activation energies of Ec-Et1＝0.42eV and Ec-Et2＝0.59eV,whose capture cross sections are 6.27×10-17cm2 and 6.49×10-20 cm2，where Et1 and Et2 are Si-related and O-related deep levels,respectively. The relationship between excitation power and PL peak intensity have revealed that nonradiative recombination centers of deep levels exist in AlGaInP.The current gain of AlGaInP/GaAs HBT decreases due to the existence of deep levels in AlGaInP.</p> <br/>Acta Physica Sinica. 1999 48(3): 556-560. Published 1999-03-20 INFLUENCE OF DEEP LEVELS ON THE PERFORMANCE OF AlGaInP/GaAs HETEROJUNCTION BIPOLAR TRANSISTOR ZHANG XING-HONG, HU YU-SHENG, WU JIE, CHENG ZHI-QUN, XIA GUAN-QUN, XU YUAN-SEN, CHEN ZHANG-HAI, GUI YONG-SHENG, CHU JUN-HAO 1999-03-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1999 48(3): 556-560. article doi:10.7498/aps.48.556 10.7498/aps.48.556 Acta Physica Sinica 48 3 1999-03-20 //www.getgobooth.com/en/article/doi/10.7498/aps.48.556 556-560

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