应用电流型脉冲技术精确测量ms级脉冲中子束时间谱的方法研究

The Application Research on the Current-Type Pulse Technique to Measure ms-Scale Pulsed Neutron Time Spectrum

概述了一类ms级脉冲中子束的产生背景、辐射特征及探测难点,提出了精确测量该类脉冲中子时间谱的电流型脉冲技术测量方法,在稳态X射线机上初步摸索了电流型脉冲计数方法用于聚变中子飞行时间谱测量的可行性;在西安脉冲反应堆上进行了电流型脉冲计数方法的模拟验证。结果表明:采用电流型脉冲技术测量ms级脉冲中子时间谱的精度最高可达ns级。

It introduces a type of ms-scale pulsed neutron＇s generation background, radiation characteristics and detection difficulties. It brings forth the method of current-type pulse technique to measure accurately the pulsed neutron time spectrum. It gropes the way to apply the method measuring fusion neutron time of flight spectrum on steady X-ray machine and also testifies the feasibility on the pulsed reactor. The results show that the pulsed neutron time spectrum measurement precision adopting the current-type pulse teehniaue can reach ns scale best.