摘要
本实验用薄膜￣（２５２）Ｃｆ源的裂变中子测定ＳＴ４５１型快中子探测器的有效中子阈。文中叙述了用单能γ射线源刻度探测器对电子能量响应的方法，康普顿边的位置通过比较测量的脉冲幅度谱和ＭｏｎｔｅＣａｒｌｏ模拟的分布与探测器的脉冲幅度分辨进行折叠的理论谱被精确地确定。给出了中子能量在７Ｍｅｖ以下，ＳＴ４５１型快中子探测器的有效中子阈和电子的相对闪烁响应数据。
The effective neutron detection threshold of scintillation detector is determined by meansof fission neutrons from a thin ￣(252)Cf source,A method is described which uses monenergeticphoton sources for calibrating electron energy of the detector.The position of the Comptonedge has been precisely determined by comparing the measured pulse height spectrum with aMonte Carlo simulated distribution properly folded with the pulse height dependent resolution·As a result,the effective neutron threshold and relative electron response for ST 451 detector inthe neutron energy range up to about 7.0 MeV is given.(
出处
《核电子学与探测技术》
CSCD
北大核心
1994年第3期140-148,共9页
Nuclear Electronics & Detection Technology
基金
中国核工业总公司和中国核数据中心的资助
关键词
中子探测器
阈值
相对闪烁响应
Scintillation detector Effective neutron threshold Thin￣(252)Cf sourceCompton electrons Relative scintillation response)
