介绍了一新型的用于(n,2n)反应截面测量的由“80根3He正比计数管和聚乙烯慢化体”组成的3He球形4π中子探测器的优化设计,并采用蒙特卡罗方法计算了探测器系统的单位中子能量注量响应,提高了探测器的设计效率,也为实验验证提供参考依据.%It introduced the design of a newly 4π neutron detector used to measure (n, 2n) cross section and composed by 80 3He proportional counters and a large spherical polyethylene moderator, and the Monte Carlo method was used to calculate the unit neutron energy fluence response of the detector system, which not only improved the design efficiency, but also provided a reference for the following experiment.
展开▼
