//www.getgobooth.com/ 必威体育下载 daily 15 2024-08-20 10:33:38 apsoffice@iphy.ac.cn apsoffice@iphy.ac.cn 2024-08-20 10:33:38 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.33.1629 Author(s): LIU SHU-ZHENG <br/><p>In this paper, we have calculated the energy levels and wave functions, selection rules of two-photon fransition and two-photon magnetoabsorption of narrow-gap semiconductor in a magnetic field. The comparison of theoretical result and experimental spectra is given.</p> <br/>Acta Physica Sinica. 1984 33(12): 1629-1639. Published 1984-06-05 Author(s): LIU SHU-ZHENG <br/><p>In this paper, we have calculated the energy levels and wave functions, selection rules of two-photon fransition and two-photon magnetoabsorption of narrow-gap semiconductor in a magnetic field. The comparison of theoretical result and experimental spectra is given.</p> <br/>Acta Physica Sinica. 1984 33(12): 1629-1639. Published 1984-06-05 ON THE HIGH ORDER OPTICAL PROPERTIES OF NARROW-GAP SEMICONDUCTOR IN A MAGNETIC FIELD (Ⅰ) LIU SHU-ZHENG 1984-06-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(12): 1629-1639. article doi:10.7498/aps.33.1629 10.7498/aps.33.1629 Acta Physica Sinica 33 12 1984-06-05 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1629 1629-1639 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1640 Author(s): LIU SHU-ZHENG <br/><p>In this paper, the third order optical nonlinearity of narrow-gap semiconductor near two-photon resonance in a magnetic field is discussed. The theoretical positions and relative strengths of the peaks of nonlinear Faraday rotation and Voigt phase shift near the gap edge are obtained.</p> <br/>Acta Physica Sinica. 1984 33(12): 1640-1649. Published 1984-06-05 Author(s): LIU SHU-ZHENG <br/><p>In this paper, the third order optical nonlinearity of narrow-gap semiconductor near two-photon resonance in a magnetic field is discussed. The theoretical positions and relative strengths of the peaks of nonlinear Faraday rotation and Voigt phase shift near the gap edge are obtained.</p> <br/>Acta Physica Sinica. 1984 33(12): 1640-1649. Published 1984-06-05 ON THE HIGH ORDER OPTICAL PROPERTIES OF NARROW-GAP SEMICONDUCTOR IN A MAGNETIC FIELD (Ⅱ) LIU SHU-ZHENG 1984-06-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(12): 1640-1649. article doi:10.7498/aps.33.1640 10.7498/aps.33.1640 Acta Physica Sinica 33 12 1984-06-05 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1640 1640-1649 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1650 Author(s): WU SHI-YU, ZHOU ZI-FANG <br/><p>A careful analysis of the boundary effects on the eigenstates of a disordered system when it is embeded in an ordered system was carried out. It was found that the properties of the system in the region whose distance from the boundary is greater than the localization length of the system can be reproduced. This then suggests a convenient way to study the eigenstatea of disordered systems.</p> <br/>Acta Physica Sinica. 1984 33(12): 1650-1660. Published 1984-06-05 Author(s): WU SHI-YU, ZHOU ZI-FANG <br/><p>A careful analysis of the boundary effects on the eigenstates of a disordered system when it is embeded in an ordered system was carried out. It was found that the properties of the system in the region whose distance from the boundary is greater than the localization length of the system can be reproduced. This then suggests a convenient way to study the eigenstatea of disordered systems.</p> <br/>Acta Physica Sinica. 1984 33(12): 1650-1660. Published 1984-06-05 BOUNDARY EFFECTS ON THE EIGENSTATES OF DISORDERED SYSTEMS WU SHI-YU, ZHOU ZI-FANG 1984-06-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(12): 1650-1660. article doi:10.7498/aps.33.1650 10.7498/aps.33.1650 Acta Physica Sinica 33 12 1984-06-05 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1650 1650-1660 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1661 Author(s): GUO GUANG-CAN <br/><p>The Langevin quantum theory has been used to treat the optically pumped three-level laser system. We derive an equation of motion for laser field in the type of Van der Pol equation when the photon number of the laser field is not too high. It includes not only both incoherent and coherent pumping, but also both strong and weak optical pumping. If an average over reservoir is taken, the equation will give all the semi-classical results. Our results show that the laser gain comes from two basic processes, i.e., a two-photon process and a two-step process. When the pumping strength is larger than some value, the dynamic Stark effect will appear. The laser linewidth is mainly contributed by the thermal noise, the vaecum fluctuation, the spontaneous emissions between the laser levels and the spontaneous Raman scattering.</p> <br/>Acta Physica Sinica. 1984 33(12): 1661-1672. Published 1984-06-05 Author(s): GUO GUANG-CAN <br/><p>The Langevin quantum theory has been used to treat the optically pumped three-level laser system. We derive an equation of motion for laser field in the type of Van der Pol equation when the photon number of the laser field is not too high. It includes not only both incoherent and coherent pumping, but also both strong and weak optical pumping. If an average over reservoir is taken, the equation will give all the semi-classical results. Our results show that the laser gain comes from two basic processes, i.e., a two-photon process and a two-step process. When the pumping strength is larger than some value, the dynamic Stark effect will appear. The laser linewidth is mainly contributed by the thermal noise, the vaecum fluctuation, the spontaneous emissions between the laser levels and the spontaneous Raman scattering.</p> <br/>Acta Physica Sinica. 1984 33(12): 1661-1672. Published 1984-06-05 FULL QUANTUM THEORY OF OPTICALLY PUMPED THREE-LEVEL LASER GUO GUANG-CAN 1984-06-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(12): 1661-1672. article doi:10.7498/aps.33.1661 10.7498/aps.33.1661 Acta Physica Sinica 33 12 1984-06-05 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1661 1661-1672 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1673 Author(s): LIU SHU-QIN, DONG TAI-QIAN <br/><p>When two microwaves with frequencies close to each other are applied simultaneously to a 87Rb gas cell, which is optically pumped by 85Rb lamp, the beat in the resonance signal of 0-0 transition of 87Rb gro und state is observed. Theoretical explanation is presented.</p> <br/>Acta Physica Sinica. 1984 33(12): 1673-1679. Published 1984-06-05 Author(s): LIU SHU-QIN, DONG TAI-QIAN <br/><p>When two microwaves with frequencies close to each other are applied simultaneously to a 87Rb gas cell, which is optically pumped by 85Rb lamp, the beat in the resonance signal of 0-0 transition of 87Rb gro und state is observed. Theoretical explanation is presented.</p> <br/>Acta Physica Sinica. 1984 33(12): 1673-1679. Published 1984-06-05 BEAT IN OPTICAL PUMPING EXPERIMENT LIU SHU-QIN, DONG TAI-QIAN 1984-06-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(12): 1673-1679. article doi:10.7498/aps.33.1673 10.7498/aps.33.1673 Acta Physica Sinica 33 12 1984-06-05 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1673 1673-1679 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1680 Author(s): YE CHAO-HUI, QIU JIAN-QING, LI LI-YUN, SUN BO-QIN <br/><p>The FID arising from the quadrupole interaction is broken into a rotational echo train under the slow rotation condition, and the number of these echoes increases when adjusting the angle between the rotational axis and the applied magnetic field towards the Magic Angle. Thus, a accurate and quick setting of the Magic Angle in MAS-NMR experiments can he easily obtained by this phenomenon. It is theoretically explained by analysing the FID of a spin-1 system. The setting accuracy within 0.05°with a per-deuterated HMB sample is experimentally demonstrated.</p> <br/>Acta Physica Sinica. 1984 33(12): 1680-1686. Published 1984-06-05 Author(s): YE CHAO-HUI, QIU JIAN-QING, LI LI-YUN, SUN BO-QIN <br/><p>The FID arising from the quadrupole interaction is broken into a rotational echo train under the slow rotation condition, and the number of these echoes increases when adjusting the angle between the rotational axis and the applied magnetic field towards the Magic Angle. Thus, a accurate and quick setting of the Magic Angle in MAS-NMR experiments can he easily obtained by this phenomenon. It is theoretically explained by analysing the FID of a spin-1 system. The setting accuracy within 0.05°with a per-deuterated HMB sample is experimentally demonstrated.</p> <br/>Acta Physica Sinica. 1984 33(12): 1680-1686. Published 1984-06-05 ACCURATE AND QUICK SETTING OF MAGIC ANGLE YE CHAO-HUI, QIU JIAN-QING, LI LI-YUN, SUN BO-QIN 1984-06-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(12): 1680-1686. article doi:10.7498/aps.33.1680 10.7498/aps.33.1680 Acta Physica Sinica 33 12 1984-06-05 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1680 1680-1686 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1687 Author(s): YANG CUI-YING, ZHOU YU-QING, SHU QI-MAO, XIA HONG-CHANG, CHEN YING-PING, FENG GUO-GUANG <br/><p>Symmetry determination by CBED has been carried out for LiZnTa3O9 and LiGaTa3O9 crystals, which were first grown in our laboratory, LiZnTa3O9 is rhombohedral with lattice parameters, a=0.557 nm, a=56.12°,The point group is 3m and the space group is R3c. LiCaTa3O9 is tetragonal with lattice parameters a=0.778 nm, c=0.783nm. The point group is 4/mmm.</p> <br/>Acta Physica Sinica. 1984 33(12): 1687-1692. Published 1984-06-05 Author(s): YANG CUI-YING, ZHOU YU-QING, SHU QI-MAO, XIA HONG-CHANG, CHEN YING-PING, FENG GUO-GUANG <br/><p>Symmetry determination by CBED has been carried out for LiZnTa3O9 and LiGaTa3O9 crystals, which were first grown in our laboratory, LiZnTa3O9 is rhombohedral with lattice parameters, a=0.557 nm, a=56.12°,The point group is 3m and the space group is R3c. LiCaTa3O9 is tetragonal with lattice parameters a=0.778 nm, c=0.783nm. The point group is 4/mmm.</p> <br/>Acta Physica Sinica. 1984 33(12): 1687-1692. Published 1984-06-05 SYMMETRY DETERMINATION OF LiZnTa3O9 AND LiCaTa3O9 CRYSTALS BY CBED YANG CUI-YING, ZHOU YU-QING, SHU QI-MAO, XIA HONG-CHANG, CHEN YING-PING, FENG GUO-GUANG 1984-06-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(12): 1687-1692. article doi:10.7498/aps.33.1687 10.7498/aps.33.1687 Acta Physica Sinica 33 12 1984-06-05 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1687 1687-1692 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1693 Author(s): LU KUN-QUAN, ZHAO YA-QIN, CHANG LONG-CUN <br/><p>The effect on amplitude of EXAFS from harmonic caused by high order diffraction of crystal monochromator is discussed. The general expression and calculated results are presented. It is shown that the harmornic decreases the amplitude of EXAFS and the amount of decrease is related to such factors as intensity ratio of harmonic to fundamental, thickness and absorption coefficient of specimen. K edge EXAFS spectra with and without harmonic for different thickness copper foils have been measured respectively, and the distortion of single shell EXAFS amplitudes have been extracted. The measured results are consistent with calculated ones. Consequently, a method to correct the harmonic effect on EXAFS amplitude is proposed.</p> <br/>Acta Physica Sinica. 1984 33(12): 1693-1699. Published 1984-06-05 Author(s): LU KUN-QUAN, ZHAO YA-QIN, CHANG LONG-CUN <br/><p>The effect on amplitude of EXAFS from harmonic caused by high order diffraction of crystal monochromator is discussed. The general expression and calculated results are presented. It is shown that the harmornic decreases the amplitude of EXAFS and the amount of decrease is related to such factors as intensity ratio of harmonic to fundamental, thickness and absorption coefficient of specimen. K edge EXAFS spectra with and without harmonic for different thickness copper foils have been measured respectively, and the distortion of single shell EXAFS amplitudes have been extracted. The measured results are consistent with calculated ones. Consequently, a method to correct the harmonic effect on EXAFS amplitude is proposed.</p> <br/>Acta Physica Sinica. 1984 33(12): 1693-1699. Published 1984-06-05 HARMONIC EFFECT ON EXAFS AMPLITUDE LU KUN-QUAN, ZHAO YA-QIN, CHANG LONG-CUN 1984-06-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(12): 1693-1699. article doi:10.7498/aps.33.1693 10.7498/aps.33.1693 Acta Physica Sinica 33 12 1984-06-05 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1693 1693-1699 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1700 Author(s): WANG CHAO-YING, WANG LIAN-ZHONG, SHI LEI, CHEN LI-QUAN <br/><p>The ionic conduction in polycrystalline Li3+xV1-xTxO4(T=Si, Ge) has been studied by using AC impedance method. It was found that some processing conditions, such as forming pressure, sintering time and sintering procedure have great effect on ionic conductivity. The attention was focused on the physical origins of these effects. The best specimens could be prepared under forming pressure about 8t/cm2 and continual sintering at 1000℃ for 5 to 6 days. The temperature fluctuation should be avoided during sintering process. We found that, at 25℃, the bulk ionic conductivities of polycrystalline Li3.5V0.5Ge0.5O4 and Li3.3V0.7Si0.3O4 prepared under optimal conditions are 2.2×10-5Ω-1cm-1and 1.9×10-5Ω-1cm-1 respectively.</p> <br/>Acta Physica Sinica. 1984 33(12): 1700-1706. Published 1984-06-05 Author(s): WANG CHAO-YING, WANG LIAN-ZHONG, SHI LEI, CHEN LI-QUAN <br/><p>The ionic conduction in polycrystalline Li3+xV1-xTxO4(T=Si, Ge) has been studied by using AC impedance method. It was found that some processing conditions, such as forming pressure, sintering time and sintering procedure have great effect on ionic conductivity. The attention was focused on the physical origins of these effects. The best specimens could be prepared under forming pressure about 8t/cm2 and continual sintering at 1000℃ for 5 to 6 days. The temperature fluctuation should be avoided during sintering process. We found that, at 25℃, the bulk ionic conductivities of polycrystalline Li3.5V0.5Ge0.5O4 and Li3.3V0.7Si0.3O4 prepared under optimal conditions are 2.2×10-5Ω-1cm-1and 1.9×10-5Ω-1cm-1 respectively.</p> <br/>Acta Physica Sinica. 1984 33(12): 1700-1706. Published 1984-06-05 IMPROVEMENT OF IONIC CONDUCTION IN POLYCRY-STALLINE Li3+xV1-xTxO4 (T=Ge,Si) WANG CHAO-YING, WANG LIAN-ZHONG, SHI LEI, CHEN LI-QUAN 1984-06-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(12): 1700-1706. article doi:10.7498/aps.33.1700 10.7498/aps.33.1700 Acta Physica Sinica 33 12 1984-06-05 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1700 1700-1706 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1707 Author(s): HU BO-QING, LI YONG-JING, ZHOU TANG, ZHANG DAO-FAN <br/><p>The grown condition in aqueous solutipn,morphology and polarity of 2KIO3·HC1 single crystal were studied. The transmissivity, the position of optical indicatrix in the crystal and the indices of refraction were determined and discussed. The phonomenon of phase match SHG of 1.06μm from YAG laser was observed. Its pyro- and. piezoelectric, dielectric characteristics and conductivity were determined. The anisotropy of the single crystal is interest.</p> <br/>Acta Physica Sinica. 1984 33(12): 1707-1712. Published 1984-06-05 Author(s): HU BO-QING, LI YONG-JING, ZHOU TANG, ZHANG DAO-FAN <br/><p>The grown condition in aqueous solutipn,morphology and polarity of 2KIO3·HC1 single crystal were studied. The transmissivity, the position of optical indicatrix in the crystal and the indices of refraction were determined and discussed. The phonomenon of phase match SHG of 1.06μm from YAG laser was observed. Its pyro- and. piezoelectric, dielectric characteristics and conductivity were determined. The anisotropy of the single crystal is interest.</p> <br/>Acta Physica Sinica. 1984 33(12): 1707-1712. Published 1984-06-05 CRYSTAL GROWTH AND OPTICAL AND ELECTRIC CHARACTERISTICS OF 2KIO3·HCI SINGLE CRYSTAL HU BO-QING, LI YONG-JING, ZHOU TANG, ZHANG DAO-FAN 1984-06-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(12): 1707-1712. article doi:10.7498/aps.33.1707 10.7498/aps.33.1707 Acta Physica Sinica 33 12 1984-06-05 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1707 1707-1712 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1713 Author(s): YU MIN-REN, WANG HONG-CHUAN, FANG ZHI-LIE, HOU XIAO-YUAN, WANG XUN <br/><p>The interactions of H2O and O2, with InP clean surface in the high vacuum chamber have been studied by means of Auger electron spectroscopy. It has been found that the water vapor plays a significant role responsible to the electron stimulated adsorption of oxygen than the pure oxygen. The In and P Auger signals change substantially during the oxygen adsorption process which is accessible as an occurence of electron stimulated oxidation (ESO). The oxygen atoms bond only with surface In atoms but not with P at the earliest stage, then they penetrate into the bulk and conbine with both In and P continually making the surface layer convert into oxide with an almost constant oxidation rate. As compared with the Auger depth profiling of InP native oxides, the similarity of the ESO and the ordinary oxidation processes is obvious. But the electron stimulated adsorpted oxygen could not fully oxidize the phosphorus in the surface layer while thermal oxidation and anodic oxidation do, the P concentration in the ESO oxide is higher than that in the thermal oxide but lower than the anodic oxide.</p> <br/>Acta Physica Sinica. 1984 33(12): 1713-1718. Published 1984-06-05 Author(s): YU MIN-REN, WANG HONG-CHUAN, FANG ZHI-LIE, HOU XIAO-YUAN, WANG XUN <br/><p>The interactions of H2O and O2, with InP clean surface in the high vacuum chamber have been studied by means of Auger electron spectroscopy. It has been found that the water vapor plays a significant role responsible to the electron stimulated adsorption of oxygen than the pure oxygen. The In and P Auger signals change substantially during the oxygen adsorption process which is accessible as an occurence of electron stimulated oxidation (ESO). The oxygen atoms bond only with surface In atoms but not with P at the earliest stage, then they penetrate into the bulk and conbine with both In and P continually making the surface layer convert into oxide with an almost constant oxidation rate. As compared with the Auger depth profiling of InP native oxides, the similarity of the ESO and the ordinary oxidation processes is obvious. But the electron stimulated adsorpted oxygen could not fully oxidize the phosphorus in the surface layer while thermal oxidation and anodic oxidation do, the P concentration in the ESO oxide is higher than that in the thermal oxide but lower than the anodic oxide.</p> <br/>Acta Physica Sinica. 1984 33(12): 1713-1718. Published 1984-06-05 ELECTRON STIMULATED ADSORPTION STUDY OF OXYGEN ON InP CLEAN SURFACE YU MIN-REN, WANG HONG-CHUAN, FANG ZHI-LIE, HOU XIAO-YUAN, WANG XUN 1984-06-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(12): 1713-1718. article doi:10.7498/aps.33.1713 10.7498/aps.33.1713 Acta Physica Sinica 33 12 1984-06-05 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1713 1713-1718 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1719 Author(s): FENG WEI-GUO, SUN XIN <br/><p>The correlation bunction of inhomogeneous electron system at the metal surface has been calculated in the Hartree-Fock approximation.</p> <br/>Acta Physica Sinica. 1984 33(12): 1719-1727. Published 1984-06-05 Author(s): FENG WEI-GUO, SUN XIN <br/><p>The correlation bunction of inhomogeneous electron system at the metal surface has been calculated in the Hartree-Fock approximation.</p> <br/>Acta Physica Sinica. 1984 33(12): 1719-1727. Published 1984-06-05 THE CORRELATION FUNCTION OF ELECTRONS AT METAL SURFACES (Ⅰ)——HABTBEB-FOCK APPROXIMATION FENG WEI-GUO, SUN XIN 1984-06-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(12): 1719-1727. article doi:10.7498/aps.33.1719 10.7498/aps.33.1719 Acta Physica Sinica 33 12 1984-06-05 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1719 1719-1727 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1728 Author(s): WANG YONG-JIU <br/><p>We found exact expessions for the electromagnetic fields associated with Kerr-Ne-wmian-Kasuya black holes (rotating Dyon black holes) in a magnetic universe. In the particular ease of charge Φ0J, exact expressions for the gravitational field were also obtained.</p> <br/>Acta Physica Sinica. 1984 33(12): 1728-1732. Published 1984-06-05 Author(s): WANG YONG-JIU <br/><p>We found exact expessions for the electromagnetic fields associated with Kerr-Ne-wmian-Kasuya black holes (rotating Dyon black holes) in a magnetic universe. In the particular ease of charge Φ0J, exact expressions for the gravitational field were also obtained.</p> <br/>Acta Physica Sinica. 1984 33(12): 1728-1732. Published 1984-06-05 THE ROTATING DYON BLACK HOLES IN A MAGNETIC UNIVERSE WANG YONG-JIU 1984-06-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(12): 1728-1732. article doi:10.7498/aps.33.1728 10.7498/aps.33.1728 Acta Physica Sinica 33 12 1984-06-05 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1728 1728-1732 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1733 Author(s): QU ZHEN-YUAN, MA TIA-LIANG, GAO NAI-FEI, ZHANG HONG-TAO, XIONG JIA-JIONG <br/><p>The concentration profiles of high-dose implanted N+ (5×1017 atom/cm2, 100 keV) in iron foils (about 4000? thick) and iron bulk sample (industrial purity) were measured by E. B. S. via α-particle of energy in order of MeV. A dip was found in backscat-tering spectrum of the substrate, as a result of the high-dose impurity, implantation a method was developed to calculate the concentration profile of impurity based on the dip.</p> <br/>Acta Physica Sinica. 1984 33(12): 1733-1739. Published 1984-06-05 Author(s): QU ZHEN-YUAN, MA TIA-LIANG, GAO NAI-FEI, ZHANG HONG-TAO, XIONG JIA-JIONG <br/><p>The concentration profiles of high-dose implanted N+ (5×1017 atom/cm2, 100 keV) in iron foils (about 4000? thick) and iron bulk sample (industrial purity) were measured by E. B. S. via α-particle of energy in order of MeV. A dip was found in backscat-tering spectrum of the substrate, as a result of the high-dose impurity, implantation a method was developed to calculate the concentration profile of impurity based on the dip.</p> <br/>Acta Physica Sinica. 1984 33(12): 1733-1739. Published 1984-06-05 A STUDY OF CONCENTRATION PROFILE OF LOW-MASS IONS IMPLANTED IN METALS BY R. B. S. QU ZHEN-YUAN, MA TIA-LIANG, GAO NAI-FEI, ZHANG HONG-TAO, XIONG JIA-JIONG 1984-06-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(12): 1733-1739. article doi:10.7498/aps.33.1733 10.7498/aps.33.1733 Acta Physica Sinica 33 12 1984-06-05 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1733 1733-1739 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1740 Author(s): TANG JIA-YONG, GE QI-YUN, LU FU-QUAN, SUN CHANG-NIAN, WENG TAI-MENG, YANG JIAN-JUN, YE HUI, YANG FU-JIA <br/><p>In order to provide an experimental evidence for the controversial polarization mechanism of the beam-foil ions, He+ ions with energy of 1 MeV have been used to pass through a single crystal gold foil along the 〈110〉direction, and random direction, and the Stokces parameters of Hell 4686? 4f→3d transition have been accurately measured.</p> <br/>Acta Physica Sinica. 1984 33(12): 1740-1744. Published 1984-06-05 Author(s): TANG JIA-YONG, GE QI-YUN, LU FU-QUAN, SUN CHANG-NIAN, WENG TAI-MENG, YANG JIAN-JUN, YE HUI, YANG FU-JIA <br/><p>In order to provide an experimental evidence for the controversial polarization mechanism of the beam-foil ions, He+ ions with energy of 1 MeV have been used to pass through a single crystal gold foil along the 〈110〉direction, and random direction, and the Stokces parameters of Hell 4686? 4f→3d transition have been accurately measured.</p> <br/>Acta Physica Sinica. 1984 33(12): 1740-1744. Published 1984-06-05 STUDY ON THE POLARIZATION MECHANISM OF THE BEAM-FOIL INTERACTION IONS BY USING THE CHANNELING EFFECT TANG JIA-YONG, GE QI-YUN, LU FU-QUAN, SUN CHANG-NIAN, WENG TAI-MENG, YANG JIAN-JUN, YE HUI, YANG FU-JIA 1984-06-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(12): 1740-1744. article doi:10.7498/aps.33.1740 10.7498/aps.33.1740 Acta Physica Sinica 33 12 1984-06-05 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1740 1740-1744 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1745 Author(s): HE YUAN-JIN, CAO BI-SONG <br/><p>A new method of analysing positron annihilation lifetime spectra in the fraquency domain by Fourier transform is proposed. Some characteristics of the transform of the positron annihilation spectrum and the potential advantages of this method are briefly discussed.</p> <br/>Acta Physica Sinica. 1984 33(12): 1745-1752. Published 1984-06-05 Author(s): HE YUAN-JIN, CAO BI-SONG <br/><p>A new method of analysing positron annihilation lifetime spectra in the fraquency domain by Fourier transform is proposed. Some characteristics of the transform of the positron annihilation spectrum and the potential advantages of this method are briefly discussed.</p> <br/>Acta Physica Sinica. 1984 33(12): 1745-1752. Published 1984-06-05 THE FOURIER TRANSFORM METHOD FOR THE ANALYSIS OF POSITRON LIFETIME SPECTRA HE YUAN-JIN, CAO BI-SONG 1984-06-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(12): 1745-1752. article doi:10.7498/aps.33.1745 10.7498/aps.33.1745 Acta Physica Sinica 33 12 1984-06-05 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1745 1745-1752 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1753 Author(s): CAO XIAO-WEN, ZHANG YU-HENG <br/><p>In this work, the time effects and superconductivity in the process of phase transition in InSb films condensed at low temperatures are studied. The following important experimental results are obtained: (a) Between occurrence of the first and the second conductance jump, the film samples are in the same amorphous metallic state, and have the same superconducting transition temperature Tc. (b) The relationship between Tc and annealing temperature ta is very similar to that between conductivit σ and Ta. (c) After the second jump, the conductance decreases, during the process of super conducting transition in certain transition zone R(T), the samples transform gradually from perfect to partially superconducting, (d) There are obvious time effects in the process of phase transition.</p> <br/>Acta Physica Sinica. 1984 33(12): 1753-1758. Published 1984-06-05 Author(s): CAO XIAO-WEN, ZHANG YU-HENG <br/><p>In this work, the time effects and superconductivity in the process of phase transition in InSb films condensed at low temperatures are studied. The following important experimental results are obtained: (a) Between occurrence of the first and the second conductance jump, the film samples are in the same amorphous metallic state, and have the same superconducting transition temperature Tc. (b) The relationship between Tc and annealing temperature ta is very similar to that between conductivit σ and Ta. (c) After the second jump, the conductance decreases, during the process of super conducting transition in certain transition zone R(T), the samples transform gradually from perfect to partially superconducting, (d) There are obvious time effects in the process of phase transition.</p> <br/>Acta Physica Sinica. 1984 33(12): 1753-1758. Published 1984-06-05 THE TIME EFFECTS AND SUPERCONDUCTIVITY IN THE PROCESS OF PHASE TRANSITION IN InSb FILMS CONDENSED AT LOW TEMPERATURES CAO XIAO-WEN, ZHANG YU-HENG 1984-06-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(12): 1753-1758. article doi:10.7498/aps.33.1753 10.7498/aps.33.1753 Acta Physica Sinica 33 12 1984-06-05 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1753 1753-1758 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1759 Author(s): YU NAI-CHANG <br/><p>By applying Gilkey's result, we obtain the coefficient α3 in DeWitt-Schwinger proper time expansion of the Green function for scalar, spinor and vector fields respectively, so finally we succeed in obtaining the renormalized vacuum stress-energy tensor for deSitter space-time in large mass approximation.</p> <br/>Acta Physica Sinica. 1984 33(12): 1759-1764. Published 1984-06-05 Author(s): YU NAI-CHANG <br/><p>By applying Gilkey's result, we obtain the coefficient α3 in DeWitt-Schwinger proper time expansion of the Green function for scalar, spinor and vector fields respectively, so finally we succeed in obtaining the renormalized vacuum stress-energy tensor for deSitter space-time in large mass approximation.</p> <br/>Acta Physica Sinica. 1984 33(12): 1759-1764. Published 1984-06-05 THE RENORMALIZED VACUUM STRESS-ENERGY TENSOR OF de SITTER SPACE-TIME YU NAI-CHANG 1984-06-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(12): 1759-1764. article doi:10.7498/aps.33.1759 10.7498/aps.33.1759 Acta Physica Sinica 33 12 1984-06-05 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1759 1759-1764 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1765 Author(s): JIA WEI-YI, WANG HUAN-YUAN, SHEN SI-XIANG, HUANG YU-ZHEN, GU BEN-YUAN <br/><p>Optical rotatory dispersion of LiKSO4 crystal was pleasured at room temperature. The "crystal" nsodel of optical rotation fits well to the experimental results. In the temperature range from -180℃ to 680℃, four phase transitions were observed by means of optical rotation measurement: Phase F3 Phase F2 Phase F1 Phase X670℃→Phase α. The two transitions at low temperatures show obvious temperature hysteresis. All the transition temperatures are different from sample to sample. The relation between the transition sequence shown above and the data reported in literatures is discussed.</p> <br/>Acta Physica Sinica. 1984 33(12): 1765-1770. Published 1984-06-05 Author(s): JIA WEI-YI, WANG HUAN-YUAN, SHEN SI-XIANG, HUANG YU-ZHEN, GU BEN-YUAN <br/><p>Optical rotatory dispersion of LiKSO4 crystal was pleasured at room temperature. The "crystal" nsodel of optical rotation fits well to the experimental results. In the temperature range from -180℃ to 680℃, four phase transitions were observed by means of optical rotation measurement: Phase F3 Phase F2 Phase F1 Phase X670℃→Phase α. The two transitions at low temperatures show obvious temperature hysteresis. All the transition temperatures are different from sample to sample. The relation between the transition sequence shown above and the data reported in literatures is discussed.</p> <br/>Acta Physica Sinica. 1984 33(12): 1765-1770. Published 1984-06-05 OPTICAL ROTATION AND PHASE TRANSITIONS OF LiKSO4 CRYSTAL JIA WEI-YI, WANG HUAN-YUAN, SHEN SI-XIANG, HUANG YU-ZHEN, GU BEN-YUAN 1984-06-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(12): 1765-1770. article doi:10.7498/aps.33.1765 10.7498/aps.33.1765 Acta Physica Sinica 33 12 1984-06-05 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1765 1765-1770 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1771 Author(s): WANG PING, WAN MEI-XIANG, BI XIAN-TONG, YAO YOU-XIN, QIAN REN-YUAN <br/><p>Polypyrrole films doped with BF4-,HSO4- and ClO4- were prepared by electrochemical method. Electrical conductivities of these samples and their temperature dependences were measured by four-probe method and VSC (voltage shorted compaction) method respectively. Experimental results indicate that the apparent temperature dependence of the conductivity as obtainted by the usual four-probe method, exhibits the character of typieal semiconductor, this feature is due to the contact resistance in the interblock or intergranular regions of the film. The measurement cannot reflect the true conductivity intrinsic to the doped polypyrrole film. However, the method devi-ced to short circuit the intergranular contact resistance does actually show the metallic temperature dependence of the conductivity of doped polypyrrole film, its conductivity increases with decreasing temperatures.When the polypyrrole film doped with BF4- was .partially reduced electrochemi-cally to a room temperature conductivity of 6-9 (Ω·cm)-1, the film exhibit a metal-semiconductor transition at 100 K as obtained by VSC measurement. IR-spectra indicates that the polypyrrole chain undergo certain structural changes during the electrochemical reduction process.</p> <br/>Acta Physica Sinica. 1984 33(12): 1771-1775. Published 1984-06-05 Author(s): WANG PING, WAN MEI-XIANG, BI XIAN-TONG, YAO YOU-XIN, QIAN REN-YUAN <br/><p>Polypyrrole films doped with BF4-,HSO4- and ClO4- were prepared by electrochemical method. Electrical conductivities of these samples and their temperature dependences were measured by four-probe method and VSC (voltage shorted compaction) method respectively. Experimental results indicate that the apparent temperature dependence of the conductivity as obtainted by the usual four-probe method, exhibits the character of typieal semiconductor, this feature is due to the contact resistance in the interblock or intergranular regions of the film. The measurement cannot reflect the true conductivity intrinsic to the doped polypyrrole film. However, the method devi-ced to short circuit the intergranular contact resistance does actually show the metallic temperature dependence of the conductivity of doped polypyrrole film, its conductivity increases with decreasing temperatures.When the polypyrrole film doped with BF4- was .partially reduced electrochemi-cally to a room temperature conductivity of 6-9 (Ω·cm)-1, the film exhibit a metal-semiconductor transition at 100 K as obtained by VSC measurement. IR-spectra indicates that the polypyrrole chain undergo certain structural changes during the electrochemical reduction process.</p> <br/>Acta Physica Sinica. 1984 33(12): 1771-1775. Published 1984-06-05 ON THE METALLIC CONDUCTIVITY OF DOPED POLYPYRROLE FILM WANG PING, WAN MEI-XIANG, BI XIAN-TONG, YAO YOU-XIN, QIAN REN-YUAN 1984-06-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1984 33(12): 1771-1775. article doi:10.7498/aps.33.1771 10.7498/aps.33.1771 Acta Physica Sinica 33 12 1984-06-05 //www.getgobooth.com/en/article/doi/10.7498/aps.33.1771 1771-1775

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