平均裂变截面比是快中子反应堆物理研究中的一个重要参数,它可以用来评价和修正截面数据和中子能谱计算。 在过去,主要采用裂变室和活化法测量。六十年代,固体径迹探测器技术获得迅速发展,由于它比较简单,体积小,又可以直接记录裂变碎片,所以很快被用来测量裂变率分布和平均裂变截面比。 本工作是用固体径迹探测器测量DF-Ⅵ装置中心的。 The average fissile section ratio is an important parameter in the physics research of fast neutron reactors. It can be used to evaluate and correct the cross-section data and the neutron energy spectrum calculation. In the past, fission chambers and activation methods were mainly used. In the 1960s, solid-state track detector technology developed rapidly. Because of its simplicity and small size, fission fragments can be directly recorded, so it is quickly used to measure the fission rate distribution and the average fission cross-section ratio. This work is to use a solid track detector DF-Ⅵ device center.