Fission Yield Data Systematics for^(238)U  

作　　者：Liu Tingjin Sun Zhengjun Shu Nengchuan 

机构地区：[1]China Nuclear Data Center China Institute of Atomic Energy, Beijing 102413

出　　处：《工程科学（英文版）》2005年第4期50-58,共9页Engineering Sciences

摘　　要：Based on the mass distribution data up to 200 MeV measured by Zoller with kinetic energy method (corrected), the systematics on dependence of chain yield on incident neutron energy for each mass number A with a linear and quadric function was studied. And also the systematics of mass distribution on mass A and incident neutron energy was investigated by using 5 (or 3 ) Gaussian model. A code of nonlinear squared least method was developed and the parameters were deduced by fitting the experimental data. The calculated results with the parameters obtained could reproduce the experimental data used well. But comparisons with the data measured by radiochemistry method show some systematical difference. It is shown that there is some systematical difference between the measured data with kinetic and radioactive nuclide methods, the reasons of which need to be investigate further.Based on the mass distribution data up to 200 MeV measured by Zoner with kinetic energy method （corrected）, the systematics on dependence of chain yield on incident neutron energy for each mass number A with a linear and quadric function was studied. And also the systematics of mass distribution on mass A and incident neutron energy was investigated by using 5 （or 3 ） Gaussian model. A code of nonlinear squared least method was developed and the parameters were deduced by fitting the experimental data. The calculated results with the parameters obtained could reproduce the experimental data used well. But comparisons with the data measured by radiochemistry method show some systematical difference. It is shown that there is some systematical difference between the measured data with kinetic and radioactive nuclide methods, the masons of which need to be investigate further.

关 键 词：铀238 核裂变产物产量 分类系统 原子能 

分 类 号：TL211[核科学技术—核燃料循环与材料]