裂变谱中子诱发^(238)U裂变的质量分布  

MASS DISTRIBUTION IN FISSION SPECTRUM NEUTRON INDUCED FISSION OF ^(238)U

作　　者：苏树新[1] 刘永辉[1] 张素静 刘从贵[1] 王秀芝 戚大海[1] 唐培家[1] 

机构地区：[1]中国原子能科学研究院

出　　处：《核化学与放射化学》1991年第3期129-135,共7页Journal of Nuclear and Radiochemistry

摘　　要：本工作测量了40个质量链(A=83-161)的产额值。实验值描绘了一条完整的质量分布曲线,在该曲线下的产额值的总和为197.2％,与理论值200％很好符合,实验测量的产额值总和为141％(其中轻峰为52.65％,重峰为72.24％),轻峰和重峰的平均质量数分别为97.5和139.0,对应于每次裂变平均释放的中子数为2.5个,与编评值2.57相一致。In this work 40 mass chain yields (A= 83-161 ) are obtained. An integration of the mass yield curve gives a value of 197.2% which is in agreement with expected value of 200% in fission. The mean masses of the light and heavy groups are 52.65% and 72.24% respectively .They are located at 97.5 and 139.0. The average neutron number per fission (v) is 2.5. The v value obtained is compared with that in literature.

关 键 词：铀 裂变 质量分布 中子诱发 

分 类 号：O571.434[理学—粒子物理与原子核物理]