//m.getgobooth.com/ 必威体育下载 daily 15 2024-10-08 13:42:51 apsoffice@iphy.ac.cn apsoffice@iphy.ac.cn 2024-10-08 13:42:51 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 //m.getgobooth.com/en/article/doi/10.7498/aps.45.1425 Author(s): YU JUN, LIN JI, ZHANG JIA-KUN, LOU SEN-YUE <br/><p>Using a one-dimensional damped and parametrically driven diatomic nonlinear coupled pendulum lattice ,we find for the first time in the macro-experiment that the amplitude of localized soliton is stable, quasiperiodic, periodic or random depending on the driven parameter. Theoretically, these experimental results can be explained by the solution of a quintic nonlinear Schr?dinger equation.</p> <br/>Acta Physica Sinica. 1996 45(9): 1425-1429. Published 1996-09-20 Author(s): YU JUN, LIN JI, ZHANG JIA-KUN, LOU SEN-YUE <br/><p>Using a one-dimensional damped and parametrically driven diatomic nonlinear coupled pendulum lattice ,we find for the first time in the macro-experiment that the amplitude of localized soliton is stable, quasiperiodic, periodic or random depending on the driven parameter. Theoretically, these experimental results can be explained by the solution of a quintic nonlinear Schr?dinger equation.</p> <br/>Acta Physica Sinica. 1996 45(9): 1425-1429. Published 1996-09-20 STUDY ON THE AMPLITUDE REGRESSION PHENOMENA OF SOLITON IN DIATOMIC COUPLED PENDULUM LATTICE YU JUN, LIN JI, ZHANG JIA-KUN, LOU SEN-YUE 1996-09-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1996 45(9): 1425-1429. article doi:10.7498/aps.45.1425 10.7498/aps.45.1425 Acta Physica Sinica 45 9 1996-09-20 //m.getgobooth.com/en/article/doi/10.7498/aps.45.1425 1425-1429 //m.getgobooth.com/en/article/doi/10.7498/aps.45.1430 Author(s): LI BIAO, CHU JUN-HAO, SHI XIAO-HONG, CHEN XIN-QIANG, CAO JU-YING, TANG DING-YUAN <br/><p>The free carrier absorption spectra for Hg1-xCdxTe epilayers are derived by considering the composition-in-depth nonuniformity and Te precipitates in the epilayers. The results show that the absorption behaviour of epilayers exhibits many differences with that of the bulk materials. The Te precipitates may exist when the calculated transmission is much higher than the experimental data.</p> <br/>Acta Physica Sinica. 1996 45(9): 1430-1437. Published 1996-09-20 Author(s): LI BIAO, CHU JUN-HAO, SHI XIAO-HONG, CHEN XIN-QIANG, CAO JU-YING, TANG DING-YUAN <br/><p>The free carrier absorption spectra for Hg1-xCdxTe epilayers are derived by considering the composition-in-depth nonuniformity and Te precipitates in the epilayers. The results show that the absorption behaviour of epilayers exhibits many differences with that of the bulk materials. The Te precipitates may exist when the calculated transmission is much higher than the experimental data.</p> <br/>Acta Physica Sinica. 1996 45(9): 1430-1437. Published 1996-09-20 FREE CARRIER ABSORPTION SPECTRA FOR Hg1-xCdxTe EPILAYERS LI BIAO, CHU JUN-HAO, SHI XIAO-HONG, CHEN XIN-QIANG, CAO JU-YING, TANG DING-YUAN 1996-09-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1996 45(9): 1430-1437. article doi:10.7498/aps.45.1430 10.7498/aps.45.1430 Acta Physica Sinica 45 9 1996-09-20 //m.getgobooth.com/en/article/doi/10.7498/aps.45.1430 1430-1437 //m.getgobooth.com/en/article/doi/10.7498/aps.45.1438 Author(s): HE ZHI-YONG, LI ZU-YU, JIN GEN-MING, DUAN LI-MIN, DAI GUANG-XI, WU HE-YU, ZHANG BAO-GUO, WEN WAN-XIN, QI YU-JIN, LUO QING-ZHEN <br/><p>The in-plane and out-of-plane emission of unstable light nuclei was measured in the reaction of ４０Ａｒ＋１９７Ａｕ at energy 25MeV/u by means of extensive particle-particle correlation. An in-plane enhancement is observed for mid-rapidity unstable light nuclei, indicating a rotational effect exists in this reaction system. This in-plane enhanced emission becomes stronger with increasing of impact parameter, but becomes a little weaker with increasiong of energy of the excited state.</p> <br/>Acta Physica Sinica. 1996 45(9): 1438-1443. Published 1996-09-20 Author(s): HE ZHI-YONG, LI ZU-YU, JIN GEN-MING, DUAN LI-MIN, DAI GUANG-XI, WU HE-YU, ZHANG BAO-GUO, WEN WAN-XIN, QI YU-JIN, LUO QING-ZHEN <br/><p>The in-plane and out-of-plane emission of unstable light nuclei was measured in the reaction of ４０Ａｒ＋１９７Ａｕ at energy 25MeV/u by means of extensive particle-particle correlation. An in-plane enhancement is observed for mid-rapidity unstable light nuclei, indicating a rotational effect exists in this reaction system. This in-plane enhanced emission becomes stronger with increasing of impact parameter, but becomes a little weaker with increasiong of energy of the excited state.</p> <br/>Acta Physica Sinica. 1996 45(9): 1438-1443. Published 1996-09-20 AZIMUTHALLY ANISOTROPIC EMISSION OF UNSTABLE LIGHT NUCLEI IN NUCLEUS-NUCLEUS COLLISIONS HE ZHI-YONG, LI ZU-YU, JIN GEN-MING, DUAN LI-MIN, DAI GUANG-XI, WU HE-YU, ZHANG BAO-GUO, WEN WAN-XIN, QI YU-JIN, LUO QING-ZHEN 1996-09-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1996 45(9): 1438-1443. article doi:10.7498/aps.45.1438 10.7498/aps.45.1438 Acta Physica Sinica 45 9 1996-09-20 //m.getgobooth.com/en/article/doi/10.7498/aps.45.1438 1438-1443 //m.getgobooth.com/en/article/doi/10.7498/aps.45.1444 Author(s): LI DA-WAN, PAN GUANG-YAN, YANG FENG <br/><p>The excited states produced in collisions of N+2 and N+ with Ne have been studied by using emission spectroscopy. The emission spectra show that there are four processes of the excitation in these collision systems,namely:(1)Direct excitation of target;(2)Direct excitation of atomic projectile;(1)Direct excitation of molecular ion;(4)Charge exchange excitation. The emission cross sections for each spectral line are calculated . Acomparison of emission cross sections in collisions between N+2-Ne and N+-Ne is made. Some differences are found and the primary results have been discussed qualitatively.</p> <br/>Acta Physica Sinica. 1996 45(9): 1444-1449. Published 1996-09-20 Author(s): LI DA-WAN, PAN GUANG-YAN, YANG FENG <br/><p>The excited states produced in collisions of N+2 and N+ with Ne have been studied by using emission spectroscopy. The emission spectra show that there are four processes of the excitation in these collision systems,namely:(1)Direct excitation of target;(2)Direct excitation of atomic projectile;(1)Direct excitation of molecular ion;(4)Charge exchange excitation. The emission cross sections for each spectral line are calculated . Acomparison of emission cross sections in collisions between N+2-Ne and N+-Ne is made. Some differences are found and the primary results have been discussed qualitatively.</p> <br/>Acta Physica Sinica. 1996 45(9): 1444-1449. Published 1996-09-20 A COMPARISON OF EMISSION CROSS SECTIONS IN COLLISIONS BETWEEN N+2-Ne AND N+-Ne LI DA-WAN, PAN GUANG-YAN, YANG FENG 1996-09-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1996 45(9): 1444-1449. article doi:10.7498/aps.45.1444 10.7498/aps.45.1444 Acta Physica Sinica 45 9 1996-09-20 //m.getgobooth.com/en/article/doi/10.7498/aps.45.1444 1444-1449 //m.getgobooth.com/en/article/doi/10.7498/aps.45.1450 Author(s): XU BIN, GUO GUANG-CAN <br/><p>By making a study of spectral coherence and spectrum modification induced by spectral correlation of optical field, we try to find whether it is possible to modulate a spectrum. This artical gives an example of reducing spectrum width and performs a numerical calculation. We find that the spectral coherence method can exploit much more light energy while spectrum width becomes nattow, the rate of exploiting light energy being much large than that of a filter.</p> <br/>Acta Physica Sinica. 1996 45(9): 1450-1456. Published 1996-09-20 Author(s): XU BIN, GUO GUANG-CAN <br/><p>By making a study of spectral coherence and spectrum modification induced by spectral correlation of optical field, we try to find whether it is possible to modulate a spectrum. This artical gives an example of reducing spectrum width and performs a numerical calculation. We find that the spectral coherence method can exploit much more light energy while spectrum width becomes nattow, the rate of exploiting light energy being much large than that of a filter.</p> <br/>Acta Physica Sinica. 1996 45(9): 1450-1456. Published 1996-09-20 SPECTRAL COHERENCE AND THE POSSIBILITY TO MODULATE A SPECTRUM XU BIN, GUO GUANG-CAN 1996-09-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1996 45(9): 1450-1456. article doi:10.7498/aps.45.1450 10.7498/aps.45.1450 Acta Physica Sinica 45 9 1996-09-20 //m.getgobooth.com/en/article/doi/10.7498/aps.45.1450 1450-1456 //m.getgobooth.com/en/article/doi/10.7498/aps.45.1457 Author(s): XU LEI, ZHANG ZHAO-QUN <br/><p>Hologram is analysed from a new point of view ——the microstructures of elementary hologram. The elementary analysis theory is developped to decompose the information of thrww-dimensional scattering object recorded in hologram to that of a elementary point of the object. The mocrocoding patterns of the object information under typical recording conditions are discussed.</p> <br/>Acta Physica Sinica. 1996 45(9): 1457-1462. Published 1996-09-20 Author(s): XU LEI, ZHANG ZHAO-QUN <br/><p>Hologram is analysed from a new point of view ——the microstructures of elementary hologram. The elementary analysis theory is developped to decompose the information of thrww-dimensional scattering object recorded in hologram to that of a elementary point of the object. The mocrocoding patterns of the object information under typical recording conditions are discussed.</p> <br/>Acta Physica Sinica. 1996 45(9): 1457-1462. Published 1996-09-20 THE ELEMENTARY MICROSTRUCTURES OF THREE-DIMENSIONAL SCATTERING OBJECT INFORMATION RECORDED IN HOLOGRAMS XU LEI, ZHANG ZHAO-QUN 1996-09-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1996 45(9): 1457-1462. article doi:10.7498/aps.45.1457 10.7498/aps.45.1457 Acta Physica Sinica 45 9 1996-09-20 //m.getgobooth.com/en/article/doi/10.7498/aps.45.1457 1457-1462 //m.getgobooth.com/en/article/doi/10.7498/aps.45.1463 Author(s): XIE RUI-HUA <br/><p>The symmetry between the field and atomic dipole squeezing(SFAS)has been exposed in the resonant JCM. The influence of some nonlinear interactions,including the nonresonant interaction, the virtual-photon processes,the intensity-dependent coupling and the interaction of a Kerr-like medium with the cavity on the SFAS has been discussed . At(2m+1)-quantum resonance,the relationship between the field and atomic squeezing has been examined.</p> <br/>Acta Physica Sinica. 1996 45(9): 1463-1478. Published 1996-09-20 Author(s): XIE RUI-HUA <br/><p>The symmetry between the field and atomic dipole squeezing(SFAS)has been exposed in the resonant JCM. The influence of some nonlinear interactions,including the nonresonant interaction, the virtual-photon processes,the intensity-dependent coupling and the interaction of a Kerr-like medium with the cavity on the SFAS has been discussed . At(2m+1)-quantum resonance,the relationship between the field and atomic squeezing has been examined.</p> <br/>Acta Physica Sinica. 1996 45(9): 1463-1478. Published 1996-09-20 STUDY OF DYNAMICAL SYMMETRY BETWEEN THE FIELD AND ATOMIC DIPOLE SQUEEZING IN A TWO-LEVEL SYSTEM XIE RUI-HUA 1996-09-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1996 45(9): 1463-1478. article doi:10.7498/aps.45.1463 10.7498/aps.45.1463 Acta Physica Sinica 45 9 1996-09-20 //m.getgobooth.com/en/article/doi/10.7498/aps.45.1463 1463-1478 //m.getgobooth.com/en/article/doi/10.7498/aps.45.1479 Author(s): SONG HONG-WEI, ZHANG JIA-HUA, ZHAO YU, HUANG SHI-HUA, YU JIA-QI <br/><p>By measuring the excitation spectra of the 4f5d bands and the fluorescent decays of the 5ＤJ—7Ｆ0（Ｊ＝２，１，０） transition probability depending on temperature in MyM′1-yFClxBr1-x:Sm2+(M=Mg,Ca,Sr,Ba)series, we have studied the dependence of the energy separation between the 4f5d bands and the 5ＤJ level, the 5ＤJ—7Ｆ0（Ｊ＝２，１，０） transition probability on the composition grade(x) and (y) and the effect on hole-burning efficiency. We draw conclusions as below: In MyM′1-yFClxBr1-x:Sm2+ series, the 4f5d bands will be more close to the 5ＤJ level with the increase of the Br concentration and the concentration if snakk radium alkaline earth ion, and this situation makes the 5ＤJ—7Ｆ0 electron transition probability increase. By reasoning, the hole-burning efficiency of Sm2+ are expected to by enhanced.</p> <br/>Acta Physica Sinica. 1996 45(9): 1479-1486. Published 1996-09-20 Author(s): SONG HONG-WEI, ZHANG JIA-HUA, ZHAO YU, HUANG SHI-HUA, YU JIA-QI <br/><p>By measuring the excitation spectra of the 4f5d bands and the fluorescent decays of the 5ＤJ—7Ｆ0（Ｊ＝２，１，０） transition probability depending on temperature in MyM′1-yFClxBr1-x:Sm2+(M=Mg,Ca,Sr,Ba)series, we have studied the dependence of the energy separation between the 4f5d bands and the 5ＤJ level, the 5ＤJ—7Ｆ0（Ｊ＝２，１，０） transition probability on the composition grade(x) and (y) and the effect on hole-burning efficiency. We draw conclusions as below: In MyM′1-yFClxBr1-x:Sm2+ series, the 4f5d bands will be more close to the 5ＤJ level with the increase of the Br concentration and the concentration if snakk radium alkaline earth ion, and this situation makes the 5ＤJ—7Ｆ0 electron transition probability increase. By reasoning, the hole-burning efficiency of Sm2+ are expected to by enhanced.</p> <br/>Acta Physica Sinica. 1996 45(9): 1479-1486. Published 1996-09-20 ELECTRON TRANSITION PROCESS OF MyM′1-yFClxBr1-x:Sm2+ AND SPECTRAL HOLE-BURNING EFFICIENCY SONG HONG-WEI, ZHANG JIA-HUA, ZHAO YU, HUANG SHI-HUA, YU JIA-QI 1996-09-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1996 45(9): 1479-1486. article doi:10.7498/aps.45.1479 10.7498/aps.45.1479 Acta Physica Sinica 45 9 1996-09-20 //m.getgobooth.com/en/article/doi/10.7498/aps.45.1479 1479-1486 //m.getgobooth.com/en/article/doi/10.7498/aps.45.1487 Author(s): ZENG GUI-HUA, YU WEI, SHEN BAI-FEI, XU ZHI-ZHAN <br/><p>The characteristics of high-order relativistic harmonic generation excited by intense laser pluse in underdense plamas is inverstigated. With quasistatic approximation, the growth and saturation of Nth-order relativistic harmonics are analyzed, and the ratio of high-order power to fundamental wave power is described and calculated.</p> <br/>Acta Physica Sinica. 1996 45(9): 1487-1491. Published 1996-09-20 Author(s): ZENG GUI-HUA, YU WEI, SHEN BAI-FEI, XU ZHI-ZHAN <br/><p>The characteristics of high-order relativistic harmonic generation excited by intense laser pluse in underdense plamas is inverstigated. With quasistatic approximation, the growth and saturation of Nth-order relativistic harmonics are analyzed, and the ratio of high-order power to fundamental wave power is described and calculated.</p> <br/>Acta Physica Sinica. 1996 45(9): 1487-1491. Published 1996-09-20 HIGH-ORDER RELATIVISTIC GENERATION BY INTENSE LASER PULSE ZENG GUI-HUA, YU WEI, SHEN BAI-FEI, XU ZHI-ZHAN 1996-09-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1996 45(9): 1487-1491. article doi:10.7498/aps.45.1487 10.7498/aps.45.1487 Acta Physica Sinica 45 9 1996-09-20 //m.getgobooth.com/en/article/doi/10.7498/aps.45.1487 1487-1491 //m.getgobooth.com/en/article/doi/10.7498/aps.45.1492 Author(s): WANG SHAO-JIE, QIU LI-JIAN <br/><p>By numerically solving the tow-dimensional time-dependent non-linear Fokker-Planck equations, the distribution functions are calculated and the D-T fusion reactivity are evaluated. For the tritium parallel injection case, the reactivity variation induced by the non-Maxwellian distribution is analyzed. It is pointed out that it is appropriate to define. The calculation resutlts show that η increases from 1 to maximum and then decreases during NBI heating. Either high input power or high beam energy can make η to decrease to a value less than 1. When η decreases to 1, Ｔ∥Ｔ is raised to about 10keV.</p> <br/>Acta Physica Sinica. 1996 45(9): 1492-1500. Published 1996-09-20 Author(s): WANG SHAO-JIE, QIU LI-JIAN <br/><p>By numerically solving the tow-dimensional time-dependent non-linear Fokker-Planck equations, the distribution functions are calculated and the D-T fusion reactivity are evaluated. For the tritium parallel injection case, the reactivity variation induced by the non-Maxwellian distribution is analyzed. It is pointed out that it is appropriate to define. The calculation resutlts show that η increases from 1 to maximum and then decreases during NBI heating. Either high input power or high beam energy can make η to decrease to a value less than 1. When η decreases to 1, Ｔ∥Ｔ is raised to about 10keV.</p> <br/>Acta Physica Sinica. 1996 45(9): 1492-1500. Published 1996-09-20 D-T FUSION REACTIVITY VARIATION INDUCED BY NBI-PRODUCED NON-MAXWELLIAN DISTRIBUTION WANG SHAO-JIE, QIU LI-JIAN 1996-09-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1996 45(9): 1492-1500. article doi:10.7498/aps.45.1492 10.7498/aps.45.1492 Acta Physica Sinica 45 9 1996-09-20 //m.getgobooth.com/en/article/doi/10.7498/aps.45.1492 1492-1500 //m.getgobooth.com/en/article/doi/10.7498/aps.45.1501 Author(s): SHEN JUN, WANG JUE, WU XIANG <br/><p>Porous materials silica aerogels and xerogels were obtained through a sol-gel process from TEOS. Samples derived from different preparation circumstances were investigated via small-angle X-ray scattering. The power-law dependence of the scattered intensity, a characteristic of fractal structures, was observed for all the one-step aerogels. While for the xerogels and aerogels derived from a two-step sol-gel process, the power-law dependence of the scattered intensity was not observed. The xerogels are found to consist of a number of large spherical particles which were densely packed together.</p> <br/>Acta Physica Sinica. 1996 45(9): 1501-1505. Published 1996-09-20 Author(s): SHEN JUN, WANG JUE, WU XIANG <br/><p>Porous materials silica aerogels and xerogels were obtained through a sol-gel process from TEOS. Samples derived from different preparation circumstances were investigated via small-angle X-ray scattering. The power-law dependence of the scattered intensity, a characteristic of fractal structures, was observed for all the one-step aerogels. While for the xerogels and aerogels derived from a two-step sol-gel process, the power-law dependence of the scattered intensity was not observed. The xerogels are found to consist of a number of large spherical particles which were densely packed together.</p> <br/>Acta Physica Sinica. 1996 45(9): 1501-1505. Published 1996-09-20 STUDY ON FRACTAL STRUCTURE OF POROUS SILICA:AEROGELS AND XEROGELS SHEN JUN, WANG JUE, WU XIANG 1996-09-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1996 45(9): 1501-1505. article doi:10.7498/aps.45.1501 10.7498/aps.45.1501 Acta Physica Sinica 45 9 1996-09-20 //m.getgobooth.com/en/article/doi/10.7498/aps.45.1501 1501-1505 //m.getgobooth.com/en/article/doi/10.7498/aps.45.1506 Author(s): CHAO YUE-SHENG, SUN SHAO-QUAN, TENG GONG-QING, LAI ZU-HAN <br/><p>High density electropulsing and vacuum annealing treatments of amorphous alloy Ｆｅ７３Ｎｉ５Ｓｉ８Ｂ１４ have been carried out. The microstructural change and crystallization behavior after treating were investigated by M?ssbauer spectroscopy and TEM techniques. The experimental results show that the "electron wind " induced by high density current promotes the structure of amorphous alloy to be more relaxed and crystallized as compared with annealing treatment. And, The accelerating effect is further enhanced with an increase of current density.</p> <br/>Acta Physica Sinica. 1996 45(9): 1506-1512. Published 1996-09-20 Author(s): CHAO YUE-SHENG, SUN SHAO-QUAN, TENG GONG-QING, LAI ZU-HAN <br/><p>High density electropulsing and vacuum annealing treatments of amorphous alloy Ｆｅ７３Ｎｉ５Ｓｉ８Ｂ１４ have been carried out. The microstructural change and crystallization behavior after treating were investigated by M?ssbauer spectroscopy and TEM techniques. The experimental results show that the "electron wind " induced by high density current promotes the structure of amorphous alloy to be more relaxed and crystallized as compared with annealing treatment. And, The accelerating effect is further enhanced with an increase of current density.</p> <br/>Acta Physica Sinica. 1996 45(9): 1506-1512. Published 1996-09-20 ACCELERATING EFFECT OF HIGH DENSITY ELECTRO-PULSING UPON STRUCTURE RELAXATION AND CRYSTALLIZATION OF AMORPHOUS ALLOY CHAO YUE-SHENG, SUN SHAO-QUAN, TENG GONG-QING, LAI ZU-HAN 1996-09-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1996 45(9): 1506-1512. article doi:10.7498/aps.45.1506 10.7498/aps.45.1506 Acta Physica Sinica 45 9 1996-09-20 //m.getgobooth.com/en/article/doi/10.7498/aps.45.1506 1506-1512 //m.getgobooth.com/en/article/doi/10.7498/aps.45.1513 Author(s): PENG SHI-AN <br/><p>The heat capacity Ｃpof ThO2 can be calculated as the phonon part of Ｃp for other actinide dioxides used as fuel in nuclear reactors. Precise determination of the phonon part of Ｃp of actinide dioxides is helpful to find out the contributions of other factores to Ｃp. In this paper we have, through studying the heat capacity of ThO2, developed a general method applicable to the study of Ｃp of other solids. In the developed method the three type-different experimental measurements made on a solid-heat capacity, thermal expansion and Debye-Waller factor-can be brought together for comparison. The application of this method to the study of Ｃp of ThO2 has enabled us to propose a better description of Ｃp of ThO2 than the generally accepted expression.</p> <br/>Acta Physica Sinica. 1996 45(9): 1513-1520. Published 1996-09-20 Author(s): PENG SHI-AN <br/><p>The heat capacity Ｃpof ThO2 can be calculated as the phonon part of Ｃp for other actinide dioxides used as fuel in nuclear reactors. Precise determination of the phonon part of Ｃp of actinide dioxides is helpful to find out the contributions of other factores to Ｃp. In this paper we have, through studying the heat capacity of ThO2, developed a general method applicable to the study of Ｃp of other solids. In the developed method the three type-different experimental measurements made on a solid-heat capacity, thermal expansion and Debye-Waller factor-can be brought together for comparison. The application of this method to the study of Ｃp of ThO2 has enabled us to propose a better description of Ｃp of ThO2 than the generally accepted expression.</p> <br/>Acta Physica Sinica. 1996 45(9): 1513-1520. Published 1996-09-20 HEAT CAPACITY OF ThO2 PENG SHI-AN 1996-09-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1996 45(9): 1513-1520. article doi:10.7498/aps.45.1513 10.7498/aps.45.1513 Acta Physica Sinica 45 9 1996-09-20 //m.getgobooth.com/en/article/doi/10.7498/aps.45.1513 1513-1520 //m.getgobooth.com/en/article/doi/10.7498/aps.45.1521 Author(s): MIAO RUN-CAI, YANG ZONG-LI <br/><p>The interference between the light diffracted incidence surface wave and reflection surface wave is observed. The wave vector varies with propogation distance and the variation of surface phase causes the vatiation of viberation mode of liquid surface. The formulation of surface wave chromatioc dispersion is reconstructed and theoritical results of interference by reflection surface wave are derived. The surface tension of water and its variation with temperature are detected.</p> <br/>Acta Physica Sinica. 1996 45(9): 1521-1525. Published 1996-09-20 Author(s): MIAO RUN-CAI, YANG ZONG-LI <br/><p>The interference between the light diffracted incidence surface wave and reflection surface wave is observed. The wave vector varies with propogation distance and the variation of surface phase causes the vatiation of viberation mode of liquid surface. The formulation of surface wave chromatioc dispersion is reconstructed and theoritical results of interference by reflection surface wave are derived. The surface tension of water and its variation with temperature are detected.</p> <br/>Acta Physica Sinica. 1996 45(9): 1521-1525. Published 1996-09-20 THE PHYSICAL PROPERTIES OF LIQUID SURFACE WAVE AND ITS OPTICAL DIFFRACTION MIAO RUN-CAI, YANG ZONG-LI 1996-09-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1996 45(9): 1521-1525. article doi:10.7498/aps.45.1521 10.7498/aps.45.1521 Acta Physica Sinica 45 9 1996-09-20 //m.getgobooth.com/en/article/doi/10.7498/aps.45.1521 1521-1525 //m.getgobooth.com/en/article/doi/10.7498/aps.45.1526 Author(s): BAN DA-YAN, ZHANG HAI-FENG, LI YONG-PING, FANG RONG-CHUAN <br/><p>By using the linear muffin-tin orbital (LMTO) method, the surface electronic structure of ZnS(111) slab model is calculated, the total, local and partial densities of states for these models are presented. The structure stability and surface state are discussed. Theoretical density of states is in good agreement with the experimental result obtained from the synchrotron radiation photoemission spectra of the ZnS(111) surface.</p> <br/>Acta Physica Sinica. 1996 45(9): 1526-1535. Published 1996-09-20 Author(s): BAN DA-YAN, ZHANG HAI-FENG, LI YONG-PING, FANG RONG-CHUAN <br/><p>By using the linear muffin-tin orbital (LMTO) method, the surface electronic structure of ZnS(111) slab model is calculated, the total, local and partial densities of states for these models are presented. The structure stability and surface state are discussed. Theoretical density of states is in good agreement with the experimental result obtained from the synchrotron radiation photoemission spectra of the ZnS(111) surface.</p> <br/>Acta Physica Sinica. 1996 45(9): 1526-1535. Published 1996-09-20 A STUDY OF THE ELECTRONIC STRUCTURE OF ZnS(111) BAN DA-YAN, ZHANG HAI-FENG, LI YONG-PING, FANG RONG-CHUAN 1996-09-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1996 45(9): 1526-1535. article doi:10.7498/aps.45.1526 10.7498/aps.45.1526 Acta Physica Sinica 45 9 1996-09-20 //m.getgobooth.com/en/article/doi/10.7498/aps.45.1526 1526-1535 //m.getgobooth.com/en/article/doi/10.7498/aps.45.1536 Author(s): ZHENG YONG-MEI, WANG REN-ZHI, HE GUO-MIN <br/><p>Taking the average bond energy Em as reference level, and empitical pseudopotential scheme is employed to calculate the band alignment(including valence band, conduction band, and band gap) of three semiconductor heterojunctions:GaAs/Ge,AlAs/GaAs and AlAs/Ge and the complete and more accurate calculation results are obtained. In our calculation, the valence -band offset values ΔＥｖ of the above three heterojunctions are ０.５７，０.５０ and １.０７ｅＶ,respectively．</p> <br/>Acta Physica Sinica. 1996 45(9): 1536-1542. Published 1996-09-20 Author(s): ZHENG YONG-MEI, WANG REN-ZHI, HE GUO-MIN <br/><p>Taking the average bond energy Em as reference level, and empitical pseudopotential scheme is employed to calculate the band alignment(including valence band, conduction band, and band gap) of three semiconductor heterojunctions:GaAs/Ge,AlAs/GaAs and AlAs/Ge and the complete and more accurate calculation results are obtained. In our calculation, the valence -band offset values ΔＥｖ of the above three heterojunctions are ０.５７，０.５０ and １.０７ｅＶ,respectively．</p> <br/>Acta Physica Sinica. 1996 45(9): 1536-1542. Published 1996-09-20 THE APPLICATION OF EMPIRICAL PSEUDOPOTENTIAL SCHEME ON THE THEORETICAL CALCULATION OF HETEROJUNCTION BAND ALIGNMENT ZHENG YONG-MEI, WANG REN-ZHI, HE GUO-MIN 1996-09-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1996 45(9): 1536-1542. article doi:10.7498/aps.45.1536 10.7498/aps.45.1536 Acta Physica Sinica 45 9 1996-09-20 //m.getgobooth.com/en/article/doi/10.7498/aps.45.1536 1536-1542 //m.getgobooth.com/en/article/doi/10.7498/aps.45.1543 Author(s): ZHENG YONG-MEI, CHEN YU, MIAO RONG-ZHI <br/><p>The quantitative analyses for our proposed potential-barrier model are given in this paper. The results quantitatively explain how the semiconductiong BaTiO3 ceramics transforms from PTC effect to GBBL capacitor. The designs of PTC resistors and GBBL capacitors from this model are made, and the design properties are much better than that of present experimental data. The mathods improving the properties of relevant devices are discussed. The model provides a theoretical basis for the design, manufacture and property improvement of semiconducting BaTiO3 ceramic devices.</p> <br/>Acta Physica Sinica. 1996 45(9): 1543-1550. Published 1996-09-20 Author(s): ZHENG YONG-MEI, CHEN YU, MIAO RONG-ZHI <br/><p>The quantitative analyses for our proposed potential-barrier model are given in this paper. The results quantitatively explain how the semiconductiong BaTiO3 ceramics transforms from PTC effect to GBBL capacitor. The designs of PTC resistors and GBBL capacitors from this model are made, and the design properties are much better than that of present experimental data. The mathods improving the properties of relevant devices are discussed. The model provides a theoretical basis for the design, manufacture and property improvement of semiconducting BaTiO3 ceramic devices.</p> <br/>Acta Physica Sinica. 1996 45(9): 1543-1550. Published 1996-09-20 ON THE CONTINUOUS TRANSITION FROM PTC EFFECT TO GBBL CAPACITOR FOR BaTiO3 SEMICONDUCTING CERAMICS——APPLICATION OF THE GRAIN BOUNDARY BARRIER MODEL ZHENG YONG-MEI, CHEN YU, MIAO RONG-ZHI 1996-09-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1996 45(9): 1543-1550. article doi:10.7498/aps.45.1543 10.7498/aps.45.1543 Acta Physica Sinica 45 9 1996-09-20 //m.getgobooth.com/en/article/doi/10.7498/aps.45.1543 1543-1550 //m.getgobooth.com/en/article/doi/10.7498/aps.45.1551 Author(s): ZHOU SHI-PING, XU KE-XI <br/><p>An analytical method is presented for investigating the resonant behaviors of composed resonator formed by deporviting the c caxis oriented ＹＢａ2Ｃｕ3Ｏ７－δ (δ≈≈0) thin film on ＬａＡｌＯ3（００１）. The concept of the negative dielectric medium for a superconductor is introduced within the framework of the two-fluid model, which permits us to treat a superconductor as any other penetrable materials so as only its electromagnetic property is concerned. A conformal transformation is further suggested to map the original open boundary value problem to a closed one. This not only makes the original problem readily solved by using the variational technique, but also is powerful for the analyzing a kind of problems such as the propagation characteristics of the superconducting microstripe and coplannar waveguiding structures.</p> <br/>Acta Physica Sinica. 1996 45(9): 1551-1561. Published 1996-09-20 Author(s): ZHOU SHI-PING, XU KE-XI <br/><p>An analytical method is presented for investigating the resonant behaviors of composed resonator formed by deporviting the c caxis oriented ＹＢａ2Ｃｕ3Ｏ７－δ (δ≈≈0) thin film on ＬａＡｌＯ3（００１）. The concept of the negative dielectric medium for a superconductor is introduced within the framework of the two-fluid model, which permits us to treat a superconductor as any other penetrable materials so as only its electromagnetic property is concerned. A conformal transformation is further suggested to map the original open boundary value problem to a closed one. This not only makes the original problem readily solved by using the variational technique, but also is powerful for the analyzing a kind of problems such as the propagation characteristics of the superconducting microstripe and coplannar waveguiding structures.</p> <br/>Acta Physica Sinica. 1996 45(9): 1551-1561. Published 1996-09-20 THE VARIATIONAL SOLUTION TO SUPERCONDUCTIVE BOUNDARY VALUE PROBLEMS BASED ON THE NEGATIVE DIELECTRIC VERSION ZHOU SHI-PING, XU KE-XI 1996-09-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1996 45(9): 1551-1561. article doi:10.7498/aps.45.1551 10.7498/aps.45.1551 Acta Physica Sinica 45 9 1996-09-20 //m.getgobooth.com/en/article/doi/10.7498/aps.45.1551 1551-1561 //m.getgobooth.com/en/article/doi/10.7498/aps.45.1562 Author(s): XU ZHENG, ZHAO XIAO-RU, WU WEN-BIN, SUN XUE-FENG, ZHOU GUI-EN, LI XIAO-GUANG, ZHANG YU-HENG <br/><p>Growth characteristics of Bi-2212 single crystals using self-flux Bi2O3 have been experimentally studied systematically. Some of the problems encountered in the growth of crystals in the Bi system, such as the amounts of flux, thermal cycle, contamination of the crucible materials, melting incongruency, remarkable anisotropic growth rate and intergrowth of Bi-2201 phase, are discussed in detail.</p> <br/>Acta Physica Sinica. 1996 45(9): 1562-1569. Published 1996-09-20 Author(s): XU ZHENG, ZHAO XIAO-RU, WU WEN-BIN, SUN XUE-FENG, ZHOU GUI-EN, LI XIAO-GUANG, ZHANG YU-HENG <br/><p>Growth characteristics of Bi-2212 single crystals using self-flux Bi2O3 have been experimentally studied systematically. Some of the problems encountered in the growth of crystals in the Bi system, such as the amounts of flux, thermal cycle, contamination of the crucible materials, melting incongruency, remarkable anisotropic growth rate and intergrowth of Bi-2201 phase, are discussed in detail.</p> <br/>Acta Physica Sinica. 1996 45(9): 1562-1569. Published 1996-09-20 GROWTH CHARACTERISTICS OF Bi2Sr2CaCu2Oy SINGLE CRYSTALS USING SELF-FLUX XU ZHENG, ZHAO XIAO-RU, WU WEN-BIN, SUN XUE-FENG, ZHOU GUI-EN, LI XIAO-GUANG, ZHANG YU-HENG 1996-09-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1996 45(9): 1562-1569. article doi:10.7498/aps.45.1562 10.7498/aps.45.1562 Acta Physica Sinica 45 9 1996-09-20 //m.getgobooth.com/en/article/doi/10.7498/aps.45.1562 1562-1569 //m.getgobooth.com/en/article/doi/10.7498/aps.45.1570 Author(s): LI YANG, CAO GUO-HUI, WANG YUN-BO, MA QING-ZHU, XIONG XIAO-TAO, MA RU-ZHANG, CHEN NING, GUO YING-HUAN, XU ZHU-AN, ZHANG XIAO-JUN, WANG JIN-SONG, JIAO ZHENG-KUAN, PENG HUO-TIAN, ZHOU SI-HAI <br/><p>In Fe-doped Tl-1223 superconducting phase, Fe-dopants significantly destroy superconductivity . Hall coefficient, thermogravimetric measurements and M?ssbauer effect show that Fe-dopants not only directly destroy the integrity of Cu-O layers to low superconduction transition temperature, but also induce extra oxygen to enter lattice. These extra oxygen defects can strengtheningly bind carriers in Cu-O layers, Such binding effect gives rise to decreasing of the carrier density with Fe-doping level increasing. In addition. the extra oxygen results in a deviation of its neibouring Fe(Cu) from center of Cu-O network, and from a new Fe-O coordination. It is important for high-Tc superconducting mechanism to study the structural details and carrier-binding effect of extra oxygen defect on superconducticity.</p> <br/>Acta Physica Sinica. 1996 45(9): 1570-1577. Published 1996-09-20 Author(s): LI YANG, CAO GUO-HUI, WANG YUN-BO, MA QING-ZHU, XIONG XIAO-TAO, MA RU-ZHANG, CHEN NING, GUO YING-HUAN, XU ZHU-AN, ZHANG XIAO-JUN, WANG JIN-SONG, JIAO ZHENG-KUAN, PENG HUO-TIAN, ZHOU SI-HAI <br/><p>In Fe-doped Tl-1223 superconducting phase, Fe-dopants significantly destroy superconductivity . Hall coefficient, thermogravimetric measurements and M?ssbauer effect show that Fe-dopants not only directly destroy the integrity of Cu-O layers to low superconduction transition temperature, but also induce extra oxygen to enter lattice. These extra oxygen defects can strengtheningly bind carriers in Cu-O layers, Such binding effect gives rise to decreasing of the carrier density with Fe-doping level increasing. In addition. the extra oxygen results in a deviation of its neibouring Fe(Cu) from center of Cu-O network, and from a new Fe-O coordination. It is important for high-Tc superconducting mechanism to study the structural details and carrier-binding effect of extra oxygen defect on superconducticity.</p> <br/>Acta Physica Sinica. 1996 45(9): 1570-1577. Published 1996-09-20 EXTRA OXYGEN DEFECT INDUCED BY Fe-DOPING IN Tl-SYSTEM SUPERCONDUCTOR LI YANG, CAO GUO-HUI, WANG YUN-BO, MA QING-ZHU, XIONG XIAO-TAO, MA RU-ZHANG, CHEN NING, GUO YING-HUAN, XU ZHU-AN, ZHANG XIAO-JUN, WANG JIN-SONG, JIAO ZHENG-KUAN, PENG HUO-TIAN, ZHOU SI-HAI 1996-09-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1996 45(9): 1570-1577. article doi:10.7498/aps.45.1570 10.7498/aps.45.1570 Acta Physica Sinica 45 9 1996-09-20 //m.getgobooth.com/en/article/doi/10.7498/aps.45.1570 1570-1577 //m.getgobooth.com/en/article/doi/10.7498/aps.45.1578 Author(s): XU ZHENG, ZHAO XIAO-RU, WU WEN-BIN, SUN XUE-FENG, WANG LIANG-BIN, ZHOU GUI-EN, LI XIAO-GUANG, ZHANG YU-HENG <br/><p>The modulated structure of Bi2Sr2CaCu2Oy single crystals has been observed and studied in detail with an X-ray rotating-anode diffractometer, indicating that the satellites of Bragg reflections are stretched along the c* direction in reciprocial space. It is the result of the stretch that the widened peaks are incompatible with a B-centered orthorhombic bravais lattice , and the intensities of satellites become asymmetry. The superlattice based on the lattice mismatch is not orthorhombic but monoclinic and perhaps forms superlattice twin structure in Bi-2212 single crystals.</p> <br/>Acta Physica Sinica. 1996 45(9): 1578-1585. Published 1996-09-20 Author(s): XU ZHENG, ZHAO XIAO-RU, WU WEN-BIN, SUN XUE-FENG, WANG LIANG-BIN, ZHOU GUI-EN, LI XIAO-GUANG, ZHANG YU-HENG <br/><p>The modulated structure of Bi2Sr2CaCu2Oy single crystals has been observed and studied in detail with an X-ray rotating-anode diffractometer, indicating that the satellites of Bragg reflections are stretched along the c* direction in reciprocial space. It is the result of the stretch that the widened peaks are incompatible with a B-centered orthorhombic bravais lattice , and the intensities of satellites become asymmetry. The superlattice based on the lattice mismatch is not orthorhombic but monoclinic and perhaps forms superlattice twin structure in Bi-2212 single crystals.</p> <br/>Acta Physica Sinica. 1996 45(9): 1578-1585. Published 1996-09-20 X-RAY DIFFRACTION STUDY OF THE MODULATED STRUCTURE IN Bi2Sr2CaCu2Oy SINGLE CRYSTALS XU ZHENG, ZHAO XIAO-RU, WU WEN-BIN, SUN XUE-FENG, WANG LIANG-BIN, ZHOU GUI-EN, LI XIAO-GUANG, ZHANG YU-HENG 1996-09-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1996 45(9): 1578-1585. article doi:10.7498/aps.45.1578 10.7498/aps.45.1578 Acta Physica Sinica 45 9 1996-09-20 //m.getgobooth.com/en/article/doi/10.7498/aps.45.1578 1578-1585 //m.getgobooth.com/en/article/doi/10.7498/aps.45.1586 Author(s): LI GU-BO, ZHANG FU-LONG, FAN HONG-LEI, CHEN HUA-JIE, YU MING-REN, HOU XIAO-YUAN <br/><p>After the treatment of porous Si by "amine immersion and rapid thermal oxidation", the peak position of the photoluminescence spectra has a blue shift to 500nm. Only a little change in photoluminescence was observed after 160d storing in dry air. FTIR spectra indicate that the compositions of such treated sample are mainly silicon and oxygen. ESR signal shows that the blue/green light-emitting sample has rather low density of dangling bonds. These results demonstrete that the quantum confinement effect and surface states play a key role in blue/green light emitting. This method is simple and practicable, to make blue/green light-emitting samples and its success ratio can achieve 70%.</p> <br/>Acta Physica Sinica. 1996 45(9): 1586-1591. Published 1996-09-20 Author(s): LI GU-BO, ZHANG FU-LONG, FAN HONG-LEI, CHEN HUA-JIE, YU MING-REN, HOU XIAO-YUAN <br/><p>After the treatment of porous Si by "amine immersion and rapid thermal oxidation", the peak position of the photoluminescence spectra has a blue shift to 500nm. Only a little change in photoluminescence was observed after 160d storing in dry air. FTIR spectra indicate that the compositions of such treated sample are mainly silicon and oxygen. ESR signal shows that the blue/green light-emitting sample has rather low density of dangling bonds. These results demonstrete that the quantum confinement effect and surface states play a key role in blue/green light emitting. This method is simple and practicable, to make blue/green light-emitting samples and its success ratio can achieve 70%.</p> <br/>Acta Physica Sinica. 1996 45(9): 1586-1591. Published 1996-09-20 A NEW METHOD TO ACHIEVE THE BLUE/GREEN LIGHT-EMITTING FROM POROUS SILICON LI GU-BO, ZHANG FU-LONG, FAN HONG-LEI, CHEN HUA-JIE, YU MING-REN, HOU XIAO-YUAN 1996-09-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1996 45(9): 1586-1591. article doi:10.7498/aps.45.1586 10.7498/aps.45.1586 Acta Physica Sinica 45 9 1996-09-20 //m.getgobooth.com/en/article/doi/10.7498/aps.45.1586 1586-1591 //m.getgobooth.com/en/article/doi/10.7498/aps.45.1592 Author(s): LI GUO-HUA, LIU ZHEN-XIAN, HAN HE-XIANG, WANG ZHAO-PING, DONG JIAN-RONG, LU DA-CHENG, SUN DIAN-ZHAO, WANG ZHAN-GUO <br/><p>The photoluminescence of spontaneously ordered Ga0.5In0.5P alloy has been measured at room temperature and under hydrostatic pressure up to 7GPa. The direct-band gap of three ordered samples is lower than that of disordered sample by 115,92 and 43 meV at normal pressure, respectively. Their pressure coefficients are also reduced from 92meV/GPa of the disordered sample to 75,81 and 83meV/GPa for three ordered samples. Both the narrowing of the band gap and the reducing of its pressure coefficients can be well explained using a Γ-Ｌ interaction model. The obtained Γ-Ｌ interaction poteraction potential is 0.19,0.15 and 0.10 eV for three ordered samples, respectively. It confirms that the [111] order in the spontaneously ordered Ga0.5In0.5P alloy is the main reason for the band-gap narrowing. An obvious Γ-X anticrossing has been observed in sample C,but the Γ-X interaction potential(0.011eV)is one order of magnitude less than the Γ-L interaction. It indicates that a weak [001] order coexists with the main [111] order in sample C.</p> <br/>Acta Physica Sinica. 1996 45(9): 1592-1600. Published 1996-09-20 Author(s): LI GUO-HUA, LIU ZHEN-XIAN, HAN HE-XIANG, WANG ZHAO-PING, DONG JIAN-RONG, LU DA-CHENG, SUN DIAN-ZHAO, WANG ZHAN-GUO <br/><p>The photoluminescence of spontaneously ordered Ga0.5In0.5P alloy has been measured at room temperature and under hydrostatic pressure up to 7GPa. The direct-band gap of three ordered samples is lower than that of disordered sample by 115,92 and 43 meV at normal pressure, respectively. Their pressure coefficients are also reduced from 92meV/GPa of the disordered sample to 75,81 and 83meV/GPa for three ordered samples. Both the narrowing of the band gap and the reducing of its pressure coefficients can be well explained using a Γ-Ｌ interaction model. The obtained Γ-Ｌ interaction poteraction potential is 0.19,0.15 and 0.10 eV for three ordered samples, respectively. It confirms that the [111] order in the spontaneously ordered Ga0.5In0.5P alloy is the main reason for the band-gap narrowing. An obvious Γ-X anticrossing has been observed in sample C,but the Γ-X interaction potential(0.011eV)is one order of magnitude less than the Γ-L interaction. It indicates that a weak [001] order coexists with the main [111] order in sample C.</p> <br/>Acta Physica Sinica. 1996 45(9): 1592-1600. Published 1996-09-20 PHOTOLUMINESCENCE OF SPONTANEOUSLY ORDERED Ga0.5In0.5P ALLOY UNDER HYDROSTATIC PRESSURE LI GUO-HUA, LIU ZHEN-XIAN, HAN HE-XIANG, WANG ZHAO-PING, DONG JIAN-RONG, LU DA-CHENG, SUN DIAN-ZHAO, WANG ZHAN-GUO 1996-09-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1996 45(9): 1592-1600. article doi:10.7498/aps.45.1592 10.7498/aps.45.1592 Acta Physica Sinica 45 9 1996-09-20 //m.getgobooth.com/en/article/doi/10.7498/aps.45.1592 1592-1600