检索结果-南通市图书馆

Productions of kaon and lambda by 50 GeV protons incident on nuclear targets

在线全文

学校读者我要写书评

暂无评论

nuclear Science and Techniques 1998年第2期9卷 74-77页

作者： Xu Xiao-Ming (shanghai institute of nuclear research, the chinese academy of sciences, shanghai 201800) shanghai institute of nuclear research Chinese Academy of Sciences Shanghai 201800 China

A Glauber multiple scattering theory in terms of pations and nucleons is applied to study productions of kaon, lambda and antilambda ill 50 GeV proton-nucleus scatterings at JHF (the Japan Hadron Facility). Tile ratios of tile differential cross sections of nucleontungsten to nucleon-beryllium are calclutated versus the transverse momentum at central rapidity. The cancellation between the single and double scattering amplitudes leads to nuclear enhancement of strangeness production at central rapidity.

关键词：质子核子靶 K介子 Α粒子

Regular behaviors in SU(2) Yang-Mills classical mechanics

在线全文

学校读者我要写书评

暂无评论

nuclear Science and Techniques 1997年第3期8卷 139-143页

作者： Xu Xiao Ming (shanghai institute of nuclear research, the chinese academy of sciences, shanghai 201800) shanghaiinstituteofnuclearresearch theChineseAcademyofSciencesShanghai201800

ＲｅｇｕｌａｒｂｅｈａｖｉｏｒｓｉｎＳＵ（２）ＹａｎｇＭｉｌｓｃｌａｓｉｃａｌｍｅｃｈａｎｉｃｓＸｕＸｉａｏＭｉｎｇ（ＳｈａｎｇｈａｉＩｎｓｔｉｔｕｔｅｏｆＮｕｃｌｅａｒＲｅｓｅａｒｃｈ，ｔｈｅＣｈｉｎｅｓｅＡ... 详细信息

ＲｅｇｕｌａｒｂｅｈａｖｉｏｒｓｉｎＳＵ（２）ＹａｎｇＭｉｌｓｃｌａｓｉｃａｌｍｅｃｈａｎｉｃｓＸｕＸｉａｏＭｉｎｇ（ＳｈａｎｇｈａｉＩｎｓｔｉｔｕｔｅｏｆＮｕｃｌｅａｒＲｅｓｅａｒｃｈ，ｔｈｅＣｈｉｎｅｓｅＡｃａｄｅｍｙｏｆＳｃｉｅｎｃｅｓ，...

关键词： SU(2) 杨-Mills经典力学正则行为

Simulation of Isotopic Angular Effects under Ion Bombardment of a^(92)Mo-^(100)Mo Target

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 1997年第1期13卷 65-68页

作者： Liping ZHENG (shanghai institute of nuclear research, chinese academy of sciences, shanghai 201800, China)Risheng LI and Shuyou LI(Lab. of Atomic Imaging of Solids, institute of Metal research, chinese academy of sciences,Shenyang 110015, China) shanghai institute of nuclear research Chinese Academy of Sciences Shanghai 201800 China Lab. of Atomic Imaging of Solids Institute of Metal Research Chinese Academy of Sciences Shenyang 110015 China

Under 5 keV Ar ion bombardment of a 92Mo-100Mo target, we have investigated isotopic angular effects by means of the static and the dynamic Monte Carlo programs. Our calculated results are in quantitative agreement with the measured and other calculated results. The conclusion consistences among theories. simulations and measurements are also discussed.

关键词： Mo Target Simulation of Isotopic Angular Effects under Ion Bombardment of a Target

Critical phenomena of a nuclear system in alternative ZM models

在线全文

学校读者我要写书评

暂无评论

nuclear Science and Techniques 2000年第3期11卷 173-178页

作者： SONG Hong-Qiu (research Center of nuclear Theory of National Laboratory Of Heavy Ion Accelerator of Lanzhou, Lanzhou 730000 shanghai institute of nuclear research, the chinese academy of sciences, shanghai 201800) 兰州原子核理论研究中心重离子加速器国家实验室甘肃兰州 730000

Alternative versions of the ZM model are extended to asymmetric nuclear matter by including p meson degree of freedom in the Lagrangian. The extended models are then used to study the thermodynamical properties of asymmetric nuclear matter at finite temperature. The critical temperature for a liquid- gas phase transition in nuclear matter and its dependence on asymmetry parameter are calculated. The limiting temperature Tlim, which reflects Coulomb instability of hot nuclei, is studied. The calculated results are compared with that given by the original ZM model.

关键词：放射性核素临界现象 ZM模型固气相变热力学稳定性核子核反应临界温度

Mathematical feature of photon spectra produced in ultra-relativistic heavy-ion collision

在线全文

学校读者我要写书评

暂无评论

nuclear Science and Techniques 1997年第1期8卷 18-22页

作者： Ai Xiao Bai(Ai Hsiao Bai) ( shanghai institute of nuclear research, the chinese academy of sciences, shanghai 201800 ) shanghaiinstituteofnuclearResarch theChineseAcademyofSciencesShanghai201800

ＭａｔｈｅｍａｔｉｃａｌｆｅａｔｕｒｅｏｆｐｈｏｔｏｎｓｐｅｃｔｒａｐｒｏｄｕｃｅｄｉｎｕｌｔｒａｒｅｌａｔｉｖｉｓｔｉｃｈｅａｖｙｉｏｎｃｏｌｉｓｉｏｎＡｉＸｉａｏＢａｉ（ＡｉＨｓｉａｏＢａｉ）（Ｓｈａｎ... 详细信息

ＭａｔｈｅｍａｔｉｃａｌｆｅａｔｕｒｅｏｆｐｈｏｔｏｎｓｐｅｃｔｒａｐｒｏｄｕｃｅｄｉｎｕｌｔｒａｒｅｌａｔｉｖｉｓｔｉｃｈｅａｖｙｉｏｎｃｏｌｉｓｉｏｎＡｉＸｉａｏＢａｉ（ＡｉＨｓｉａｏＢａｉ）（ＳｈａｎｇｈａｉＩｎｓｔｉｔｕｔｅｏｆＮｕ...

关键词：重离子碰撞夸克-胶子等离子体光子谱

Synthesis and structural analysis of ^(13)C-fatty acids

在线全文

学校读者我要写书评

暂无评论

nuclear Science and Techniques 2000年第1期11卷 17-21页

作者： WANG Hui-Qiong ZHAO Xia-Ling TANG Guo-Zhong (shanghai institute of nuclear research, the chinese academy of sciences, shanghai 201800) 中科院上海原子核所上海 201800

The 13C-labeled fatty acids octanoic-1-13C acid and palmitic-1-13C acid were synthetically prepared from Ba 13CO3. The yield of the former was more than 90% and that of the latter was above 85%. MS, IR, 1H-NMR and 13N... 详细信息

关键词：碳13脂肪酸合成结构表征质谱红外光谱核磁共振氢谱核磁共振碳谱

Coherent transition radiation from REB in plasma ripple

在线全文

学校读者我要写书评

暂无评论

nuclear Science and Techniques 2000年第1期11卷 45-51页

作者： DAI Zhi-Min ZHANG Jin-Song ZHAO Xiao-Feng (National shanghai Synchrotron Radiation Center shanghai 201800 shanghai institute of nuclear research, the chinese academy of sciences, shanghai 201800 institute of Plasma Physics, the chinese academy of Scien 中科院上海原子核所国家上海同步辐射中心上海 201800 中科院等离子体物理所安徽合肥 230031

The coherent transition-radiation emission from an underdense rela tivistic beam of electrons, travelling through a dense plasma ripple, was studied. The evolution of this radiation field is described by a set of self-consistent pendulum-wave equations. Analytic calculations of the small-signal gain and numerical computations of the nonlinear saturation of this emission are presented. It is shown that such a device may provide a source of tunable coherent radiation ranging from the microwave to the infrared region.

关键词：等离子体自由电子激光器 REB 跃迁辐射相对论电子束

Study of rotational bands of ^(129)La using the projectedshell model

在线全文

学校读者我要写书评

暂无评论

nuclear Science and Techniques 1999年第3期10卷 149-154页

作者： WANG Zixing SHEN Shuifa SHI Shuanghui GU Jiahui LIU Jingyi ZHU Zhiyuan (shanghai institute of nuclear research, the chinese academy of sciences, shanghai 201800) shanghai institute of nuclear research Chinese Academy of sciences Shanghai 201800 China

The projected shell model is applied to the nucleus 129La. The present results of theoretical calculations about the one-quasiproton bands are compared with experimental data. The agreement with both the yrast πh11/2 band πg7/2 band is satisfactory. We also assign the πg7/2 [νh11/2]2 configuration with an oblate shape for one of bands in 129La.

关键词：奇数质子核 129La 高层模型旋转能带

Calculation of the Surface Segregation of Cu-0.3 at. pct Au Alloy

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2000年第6期16卷 639-640页

作者： Liping ZHENG and Risheng LI (International Center for Material Physics, chinese academy of sciences, Shenyang 110015, China) Yuanxun ZHANG and Shi QIU (shanghai institute of nuclear research, chinese academy of sciences, shanghai 201800, China) Bingyao JI Int. Cent. for Material Phys. Chinese Acad. of Sci. Shenyang 110015 China

Monte Carlo simulation technique with the energetics described by the embedded atom method has been used to calculate the surface segregation of Cu-0.3 at. pct Au alloy at T=800 K. It is found that the component Au in... 详细信息

关键词： Cu Calculation of the Surface Segregation of Cu-0.3 at pct Au Alloy