裂变产物产额数据的评价

原子核物理评论 , 2012, 29(2): 208-215.

裂变产物产额数据的评价

陈永静 ^1, , 刘廷进 ^2, , 孙正军 ^3, , 舒能川 ^4,

1.中国原子能科学研究院核数据重点实验室,北京,102413

2.中国原子能科学研究院核数据重点实验室,北京,102413

3.中国原子能科学研究院核数据重点实验室,北京,102413

4.中国原子能科学研究院核数据重点实验室,北京,102413

基金项目: 国家自然科学基金重点项目(91126010)

关键词：裂变产额 , 数据评价 , 产额能量关系 , 135Xe

Evaluation of Fission Yields

Keywords： fission yield , data evaluation , yield energy-dependence , 135Xe

以中子诱发235U裂变产生的135Xe的累积产额数据为例,利用了所有可利用的实验数据,介绍了裂变产物产额数据的评价方法,包括数据的收集、修正、评价、误差调整和数据处理,特别是协方差数据的评价、半经验模型理论计算数据的应用和相关数据的处理,给出了135Xe热能点产额的推荐值以及0～20 MeV产额-能量关系曲线。

Takeing 135 Xe produced by neutron induced fission of 235 U as an example, the evaluation method for fission yield was introduced using the all experimental data available. The evaluation procedure in- cludes the experimental data collection, correction, evaluation, error assessment and data analysis. The study of the uncertainty covariance, application of semi-empirical theoretical calculation and the yield ener- gy-dependence of 135Xe in the incident energy range 0~20 MeV were emphasized in this work.

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