裂变产物产额数据的评价

Evaluation of Fission Yields

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.