裂变核全套中子数据评价

Neutron Nuclear Data Evaluation for Actinide Nuclei

摘要: 裂变核全套中子评价数据对反应堆设计和安全运行、乏燃料少锕系核素嬗变率、嬗变系统及高燃耗反应堆设计提供重要的基础数据。文章对核数据分类、现行主要全套评价数据库及全套核数据评价方法进行阐述，并对²³⁴U(n,f)和²³⁷Np(n,2n)反应截面的实验数据进行评价。完成的裂变核全套中子数据整体满足用户需求，比原评价结果有较明显改进。

Abstract: The nuclear data for minor actinides with high accuracy are playing an important role in nuclear technology applications, including reactor design and operation, spent fuel cycle concepts, estimation of the amount of minor actinides in high burn-up reactors and the minor actinides transmutation. The classification of nuclear data and nuclear date-library were described in this paper, and the procedure of neutron nuclear data evaluation was introduced. As an example, the evaluation of ²³⁴U(n,f) and ²³⁷Np(n,2n)reaction experimental data were described. The fission nuclear data were updated and improved.