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物理学报 1989年第9期38卷 1510-1514页

作者：吕燕南黄祖洽北京师范大学低能核物理研究所

采用显含电子对相关坐标的波函数,在微扰论的框架下计算了E^l∑_g^+态氢分子与基态氢分子取cross构型时的中长程相互作用。结果表明,该相互作用在分子间距6.5α_0附近存在着一个活化能势垒,在4.5α_0附近显示出较强的化学键行为。

关键词：基态氢分子激发态化学键

Microscopic analysis of order parameters in nuclear quantum phase transitions

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Microscopic analysis of order parameters in nuclear quantum ...

第十三届全国核结构研讨会暨第九次全国“核结构与量子力学”专题讨论会

作者： Z.P.Li~(1 1)) J.Meng~(2.1 2.) 1 State Key Laboratory of nuclear physics and Technology,School of physics,Peking university,beijing 100871,china 2.School of physics and nuclear energy Engineering,Beihang university,beijing 100191,china

Microscopic signatures of nuclear ground-state shape phase transitions in Nd isotopes are studied using excitation spectra and collective wave functions obtained by diagonalization of a five-dimensional Hamiltonian for quadrupole vibrational and rotational degrees of freedom,with parameters determined by constrained self-consistent relativistic mean-field calculations for triaxial *** a function of the physical control parameter,the number of nucleons,energy gaps between the ground state and the excited vibrational states with zero angular momentum,isomer shifts,and monopole transition strengths exhibit sharp discontinuities at neutron number N = 90,which is characteristic of a first-order quantum phase transition.

关键词： nuclear quantum phase transition order parameter microscopic signature Nd isotope

Silicide synthesis by metal ion implantation and ion deposition

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Silicide synthesis by metal ion implantation and ion deposit...

2.01 6～(th) International Conference on Solid-State and Integrated Circuit Technology

作者： Zhang Xu. Zhang Huixing, Zhang XiaoJi, Qian WeidongKey Laboratory in the university for Radiation Beam Technology and Material Modification, institute of {2. {2. nuclear physics, beijing normal university, beijing Radiation Center,beijing 100875, china.

Silicides of cobalt with goodproperties were prepared using metal vaporvacuum are(MEVVA)ion *** growth of Co silicide was observed byTEM.A continuous silicide layer with thicknessof 80-2.0 nm was *** sheet resistanceof Co silicide decreases with increase of ion fluxand ion *** annealing the sheet resistancedecrease *** phase transition from CoSito CoSi was observed when the ion flux andannealing temperature ***(or Mo)

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Measurement of ^(64)Zn(n,γ) ^(65)Zn Cross Section

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Chinese journal of nuclear physics 1995年第4期17卷 342-344页

作者： Chen Jin-xiang Shi Zhao-min Tang Guo-you Zhang Guo-hui,institute of Heavy Ion physics, Peking {2., beijing 100871Lu Han-lin,Zhao Wen-rong and Yu Wei-xiang, china institute of Atomic energy, P. O. Box 2.5(3), beijing 102.13 北京大学重离子物理所北京中国原子能科学院北京

Cross sections of 64（n,γ）（65）Zn reaction are measured in the energy range from 156to 1150 keV by the activation technique. The activities of the products are counted with a highresolution HPGe γ-ray spectrometer. The neutron fluence is determined by （197）Au（n,γ）（198）Aucross section. Experimental activation cross sections are given for the first time. The errors ofthe measured results are 5%-8%.

关键词： Cross section Activation technique Zinc

Estimation of Soot and Airborne Radionuclide Emission Factors from Coal-Fired Power Plants in china

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Estimation of Soot and Airborne Radionuclide Emission Factor...

The Second Asian and Oceanic Congress for Radiation Protection

作者： JIANG Ziying1 3, PAN Ziqiang2. LIU Senlin1, CHENG Jianping3, WANG Jue3, WANG Chunhong1 1. Division of Health physics, china {2. of Atomic energy, beijing, china 2. Science & Technology Committee, CNNC, beijing, china 3. Department of Engineering physics, Tsinghua university, beijing, china

As main energy resource in china, coal-fired power is one of the major causes of atmosphere pollution. Comparison of environment impacts for coal, {2. and other energy provides important information for energy sustainable development decision-making. Study on soot and airborne radionuclide emission factors for coal-fired power plants is important part as atmosphere environment impacts of coal energy. Based on the data that effect soot emission, such as installed capacity, dust removal technique, boiler and combustion conditions of coal-fired power plant at present in china, three type emission levels （high, middle and low） of coal-fired plants are analyzed and the general soot emission factor is estimated with the result: 4.4g/kWh. It is much higher in china than foreign advanced countries’ level and the main reasons are: high energy consumption of electricity production, various levels of dust precipitation and low efficiency in whole, and some high pollution, low parameters and small capacity coal-fired plants still taking certain proportion. With soot some natural radionuclide and their descendant （U series, Th series and 40K） in coal emit to atmosphere. Based on collection and analysis of survey data and experiment results on radionuclide content in coal and coal-fired ashes, the airborne radionuclide emission factors are estimated with the results: 2.6Ra is 0.68Bq/kWh, 2.2.h is 0.56Bq/kWh, 2.8U is 0.74Bq/kWh, 2.0Pb is 3.54Bq/kWh, 2.0Po is 2.79Bq/kWh and 40K is 1.34Bq/kWh, which perform the practical emission level for coal-fired power plant in china.

关键词： soot radionuclide emission factor coal-fired power plant

Analyses of d-^(6,7)Li and d-^(7,9)Be Reactions

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Chinese journal of nuclear physics 1997年第2期19卷 103-109页

作者： Han Yinlu Shen Qingbiao Zhang Jingshang Liu Weiping Bai Xixiang china institute of Atomic {2.,P.O.Box 2.5(41),beijing 102.13.hang Zhengjun Sun Xiuquan Department of physics,Northwest university,Xian 710069 中国原子能科学院北京西北大学物理系陕西西安

Aiming at the production of 6He,8Li and 7Be radioactive beams,various nuclear dataof d+6,7Li and d+9Be reactions at incident energies spanning 0,1～30.0 MeV are obtained bycalculation with the distorted wave Born approximation,preequilibrium nuclear reaction andHauser-Feshbach（HF）*** cross sections of d+7Be reaction are also *** show that the experimental measurement for d+7Be reaction is feasible at HI-{2.tandemaccelerator.

关键词： ~6He ~8Li and ~7Be Radioactive beam

Relativistic description of second-order correction to nuclear magnetic moments

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Relativistic description of second-order correction to nucle...

第十三届全国核结构研讨会暨第九次全国“核结构与量子力学”专题讨论会

作者： Li Jian~(1 1)) Yao Jiangming~(2.2.) Meng Jie~(1,3 3)) 1(State Key Laboratory for nuclear physics and Technology,School of physics,Peking university,beijing 100871,china) 2.School of Physical Science and Technology,Southwest university,Chongqing 400715,china) 3(School of physics and nuclear energy Engineering,Beihang university,beijing 100191,china)

Using the single particle states and residual interaction derived from the relativistic point-coupling model with PC-F1 parameter set,the second-order core polarization corrections to nuclear magnetic moments of double-closed shell nuclei plus or minus one nucleon with A = 15,17,39 and 41 have been studied and compared with previous non-relativistic *** has been found that the second-order corrections are *** these corrections,the relativistic description of isoscalar magnetic moments for nuclei with A= 15 and A = 39, becomes *** the isovector magnetic moments of nuclei with A = 15 and A = 39,the negative second-order corrections improve the description significantly,while the positive corrections for nuclei with A = 17 and A = 41 still worsen the description.

关键词： second-order core polarization magnetic moments relativistic point-coupling model residual interaction

Site 0ccupancy of Alloying Elements and Their Effects on the D0_3 Phase Stability in Fe_3Al

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Journal of Materials Science & Technology 1999年第4期15卷 339-341页

作者： Jun CAF Shaojun LIU Ying LOU and Benkuan usDepartment 0f physics, beijing N0rmal {2., beijing lO0875, chinaSuqing D UANinstitute of Applied physics and Computati0nal Mathematics, beijing 100088, china Department of physics Beijing Normal University Beijing 100875 China institute of Applied physics and Computational Mathematics Beijing 100088 China

The effects of ternary solutes Ti, Co, V, Cr, Ta, W and Mo on the D03 phase 5tability of Fe3Alintermetallics are investigated by tight-binding linear Muffin-tin orbitaI method. The predictedsite preference5 of these elements in Fe3AI are in agreement with the experimental *** calculated Iocal magnetic moment of Fe3AI is identical to the experimentaI. ln addition, itis found that the D03 phase stability of Fe3AI doped with Ti, V, Co and Cr depends on 'energygap- of energy band near Fermi level. while the D03 phase stability of Fe3AI doped with Ta, Wand Mo may be affected by Madelung energy.

关键词： Al Fe Site 0ccupancy of Alloying Elements and Their Effects on the D03 Phase Stability in Fe3Al

Effect of Nitcogen Ion Implantation on the Growth and Cell Nucleus of Stevia rebaudiana

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Effect of Nitcogen Ion Implantation on the Growth and Cell N...

中国细胞生物学学会第七次会议

作者： Mingshan Shen,Jinsen Xu,Liang Ding, Muchuan Chen,Shizhen Shu,and Ting LU Department of Biology,Xiamen university, Xiamen,Fujian,361005 china,{2. of Crop Resources,Chinese Academy of Agricultural Sciences,beijing, 100081 china, {2. of low energy nuclear physics, beijing normal university,beijing,100875 china

Primary study on the effect of nitrogen ion implantation on the development and growth, morphological changes of cell nucleus and chromosome of seeds of Stevid rebaudiana Bertoni was conducted. The result showed that ...

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中能重离子碰撞过程中的同位旋分馏

物理学进展 2004年第2期24卷 127-137页

作者：邢永忠郭文军刘建业兰州重离子加速器国家实验室原子核理论中心中国科学院近代物理研究所兰州730000

　本文主要在我们近几年来对中能重离子碰撞中同位旋分馏研究工作的基础上,结合国际上对这个问题研究的进展。对同位旋分馏动力学,产生同位旋分馏的机制,入射道效应,特别是建议将同位旋分馏强度作为提取同位旋相关平均场和建立同位旋不... 详细信息

　本文主要在我们近几年来对中能重离子碰撞中同位旋分馏研究工作的基础上,结合国际上对这个问题研究的进展。对同位旋分馏动力学,产生同位旋分馏的机制,入射道效应,特别是建议将同位旋分馏强度作为提取同位旋相关平均场和建立同位旋不对称核物质状态方程的可能性进行了讨论和分析。并进一步对该问题的深入研究进行了讨论。

关键词：中能重离子碰撞同位旋分馏同位旋物理分馏强度同位旋不对称核物质状态方程