EMPIRE计算30MeV以下238U中子核反应数据

摘要

To improve the evaluation method ,the EMPIRE was employed to analyze n+ 238 U reaction up to 30 MeV . According to the special characteristics of neutron induced reaction of actinide nuclei ,and chosing proper reaction mechanisms ,the model parameters were adjusted and reasonable neutron reaction data were obtained based on the experimental data .Comparing the EM PIRE calculation results with the data of eval‐uations and measurements ,it is found that EM PIRE can obtain reasonable results for n+ 238 U reaction up to 30 MeV .%为进一步完善核数据评价手段，本文将EM PIRE应用到中子引起锕系核素的核反应模型分析中，根据中子核反应机制的特点，选取恰当的核反应模型及模型参数，以实验数据为基础对模型参数进行调整，由EM PIRE计算获得30 M eV以下能区n＋238 U的核反应数据。从计算结果与实验数据以及各评价库数据对比来看，EM PIRE可得到较合理的结果。