单次脉冲中子源方法测量瞬发中子衰减常数

摘要

瞬发中子衰减常数α是核系统的重要标志性特征参数,该值的准确测量对于核临界安全具有重要意义.本工作采用单次脉冲中子源的方法测量了某次临界核系统的瞬发中子衰减常数,获得了几种不同次临界状态下的瞬发中子衰减常数,测量结果与252Cf随机脉冲源法测量结果一致.%The prompt neutron decay constant a is a major characteristic parameter of arnnuclear system, and its accuracy is very important to the criticality of a nuclear system.rnA series of a were measured using single pulsed neutron source, and the measuringrnresults accord with measuring results by using the 252Cf randomly pulsed neutron sourcernsystem.