BC501探测器对252Cf裂变瞬发射线的响应测量

摘要

To apply the BC501 detector to pulse time sequence measurement, two different size detector responses are measured to instantaneous rays from 252Cf fission. The time spectra of flight of γ - ray and neutron from 252 Cf fission are utilized. The γ - ray timing precision of BC501 detector can reach 1.2 ns. The absolute counts of γ - ray and neutron are obtained per fission above different neutron energy thresholds.%为了应用BC501液体闪烁探测器测量脉冲信号时间序列,利用252Cf裂变γ射线和中子飞行时间谱,测量了两种大小BC501探测器对裂变瞬发射线的响应.探测器对入射γ射线的定时精度能够达到1.2ns.获得了平均一次252Cf裂变,不同中子能量阈值以上,γ射线和中子的绝对计数.