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1998年  第15卷  第2期

核物理
中能重离子碰撞动力学理论的新进展
刘建业, 刘航, 陈波
1998, 15(2): 65-73. doi: 10.11804/NuclPhysRev.15.02.065
摘要:
简要评述当前几种主要的中能重离子碰撞动力学理论优缺点的基础上,介绍本小组初步建立起来的两体关联输运理论以及中能重离子碰撞中同位旋相关输运理论的进展情况. Based on the analyses of successes and shortcomings of Boltzmanntype models and quantum molecular dynamics for heavy ion collisions, the new progress of twobody correlation transport theory and isospindependent transport models for heavy ion collision are proposed. 
重离子耗散碰撞激发函数的涨落
王琦
1998, 15(2): 74-81. doi: 10.11804/NuclPhysRev.15.02.074
摘要:
综述了重离子耗散碰撞激发函数中截面涨落现象的实验与理论研究的现状. The present status of the studies on the cross section fluctuation phynomeno in dissipative heavy ion collisions (DHIC) is reviewed, especially for the fluctuation characteristics and the theoretical deuelopment.
沿Z=0.743N+11.6质子滴线分布的稀土区新核素的合成与研究
李占奎, 徐树威, 谢元祥, 马瑞昌
1998, 15(2): 82-87. doi: 10.11804/NuclPhysRev.15.02.082
摘要:
利用与延发质子符合的子核中已知的第一个2+→0+(基态)的γ跃迁来鉴别其β延发质子先驱核的方法已在实验中得到证实,并在兰州重离子加速器SFC上用氦喷嘴快速带传输系统成功地合成与研究了沿Z=0.743N+11.6质子滴线分布的稀土区新β延发质子先驱核135Gd和121Ce.该鉴别方法在缺中子稀土区新核素合成中将具有很大的应用前景. It′s more and more difficult to synthesis and study new nuclei along the proton dripline by using online isotope separator because of its low efficiency. A specific method of “pγ” coincidence measurement, using the known lowlying “2+→0+(ground state)” γ transition of the “daughter” nucleus in coincidence with its βdelayed proton, could increase the detection sensitivity ...
交叉学科
快重离子在凝聚态物质中引起的效应——电子能损效应
金运范, 王志光
1998, 15(2): 88-96. doi: 10.11804/NuclPhysRev.15.02.088
摘要:
简述了快重离子在凝聚态物质中引起的效应——电子能损效应,主要包括缺陷的产生和潜径迹的形成、各向异性的塑性形变、由弹性碰撞产生的缺陷的部分退火、相变(非晶化),以及尝试性的理论解释.
强脉冲离子束与新材料工艺
赵渭江, 颜莎, 韩宝玺, 王宇钢, 薛建明, 蔡崇贵
1998, 15(2): 97-102. doi: 10.11804/NuclPhysRev.15.02.097
摘要:
核爆炸产物放射性衰变过程的研究
沈姚崧, 刘成安
1998, 15(2): 103-109. doi: 10.11804/NuclPhysRev.15.02.103
摘要:
核爆炸后产物放射性和毒性及其随时间的变化是有关安全保障和环境保护的主要问题.利用新开发的数据库和程序对该问题进行了详细的理论研究,给出了裂变产物的放射性活度、生物潜在危害因子和能量沉积等量的演化情况,列出了主要放射性核的贡献,还分析了由于诱导反应在土壤和岩石中产生的放射性同位素的变化. The evolution of radioactivity and poisonousness of the products after nuclear explosion is very important for safety and environmental protection. The detailed study of the evolution of radioactivity of fission products, biological hazard potential, energy deposition and so on was performed by using the new data base and code. The contributions of the main radioactive nuclei and the evolution of radioisotopes in soil and rock are also discussed.
稳定同位素在药物动力学研究中的新进展
梁剑平, 卫增泉, 张力, 吴逢兴, 李蓉
1998, 15(2): 110-114. doi: 10.11804/NuclPhysRev.15.02.110
摘要:
综述了稳定同位素在药物动力学研究中的最新发展,随着质谱和色-质联用等仪器的普及,它将成为药物研究中的一种重要手段. The recent progress of the Stable Isotopes(SI) research on pharmacokinetics is reviewed. With development of MS and GCMS, it will be an important method for studying drugs.
核能与核数据库
对加速器驱动洁净核能系统散裂靶问题的探讨
徐春成, 叶沿林, 郭华
1998, 15(2): 115-120. doi: 10.11804/NuclPhysRev.15.02.115
摘要:
简述了加速器驱动洁净核能靶系统的研究现状和存在的问题,对进一步可开展的工作提出了建议. The present status of the study on the neutron production rate, the neutron energy spectrum and the radiative nuclear production from the target spallation in accelerator driven clean nuclear system is presented. The Monto Carlo simulation and the related physics are also discussed. Their further improvement and the suggestions for the work to be done in China are proposed.
235,238U核数据的快中子基准实验积分检验
谢文胜, 纳忠杰, 徐宴芳
1998, 15(2): 121-124. doi: 10.11804/NuclPhysRev.15.02.121
摘要:
用四个快中子基准实验检验了ENDF/B-VI、JENDL-3和CENDL-2三个评价核数据库中的235U和238U等数据.计算结果指出,ENDF/B-VI库的数据对快中子积分实验的预言更准确. Four fast benchmark experiments have been used to the data of 235,238U in testEndf/B-VI,JENDL-3 and CENDL-2 nuclear date libraries...
快报
新核素209Hg的首次观察
赵进华, 张立, 郑继文, 王积成, 秦芝, 杨永峰, 张纯, 靳根明, 郭光辉, 杜一飞, 郭天瑞, 王同庆, 郭斌, 谈锦峰
1998, 15(2): 125-126. doi: 10.11804/NuclPhysRev.15.02.125
摘要:
报道了新重丰中子汞同位素209Hg的首次观察.The new neutronrich mercury isotope 209Hg has been identified from the separated mercury products producted in 600 MeV 18O+natPb (thick target) reaction. An online, gasthermochromatographic technique and a special detection method were used. Four γ rays following the 209Hg decay were assigned. The halflife of 209Hg was determined to be 35+9-6 s. 