10MeV中子引起的~(238)U、~(209)Bi和Fe的次级中子双微分截面测量

NEUTRON DOUBLE DIFFERENTIAL CROSS SECTIONS OF ~(238)U、~(209)Bi AND Fe AT 10 MeV

摘要: ８～１３ＭｅＶ中子能区次级中子双微分截面的测量数据至今很少。联合使用中国原子能科学研究院建成的常规多探测器快中子飞行时间谱仪和相继创建的非常规快中子飞行时间谱仪进行了１０ＭｅＶ中子对２３８Ｕ、２０９Ｂｉ和Ｆｅ的次级中子双微分截面的测量，并将测量结果和理论计算结果进行了比较。

Abstract: Neutron double differential cross sections of 238 U, 209 Bi and Fe at 10 MeV are measured at 5 or 8 angles between 35° and 120° by means of both normal and abnormal TOF spectro meters using D(d,n) neutron source. The data of 238 U, 209 Bi and Fe are compared with theoretical calculations. A good agreement is achieved.