特定实验条件下中子引发^(238)U裂变率测量可行性研究  

Feasibility Study of Measuring the ^(238)U Fission Rates by Neutrons of 14 MeV in Specifical Experiment Condition)

作　　者：温中伟[1] 

机构地区：[1]中国工程物理研究院核物理与化学研究所,绵阳621900

出　　处：《中国核科技报告》2004年第2期171-176,共6页China Nuclear Science and Technology Report

摘　　要：用小型平板裂变室测量中子穿透实验模型后引发238U绝对裂变率,掌握小空间测量中子技术。通过对有无反射壳测量结果的比较,得到中子对反射壳反射因数。实验结果与MCNP模拟计算结果比较,以此来检验计算方法与参数。Using uranium fission chambers of minitype slab in the case of 14 MeV neutrons penetrating through the special experiment model, the pure 238U absolute fission rates are measured. Comparing the measurement resluts with and without reflect shell, the reflect coefficient of shell is gained. The calculate results are compared with experiment results, to prove the model calculate method and parmeter.

关 键 词：铀238 绝对裂变率 反射系数 小型平板裂变室 反射因数 

分 类 号：O571.43[理学—粒子物理与原子核物理]