测量反应堆反应性的费曼方法综述

Research Progress of Feynman Method to Measure Reactivity

反应性是一个间接测量的参数,文章回顾总结了费曼方法进行反应性测量的基本原理及其物理意义。就该方法在反应堆临界时的发散,两次计数的时间间隔造成计数丢失效应,使用多个探测器测量进行数据综合,中子源释放相关的中子等新问题进行了分析讨论。对费曼方法应用时仍存在的问题提出了看法。

Reactivity is a parameter measured indirectly.The principle and physical meaning of Feynman method to measure reactivity are reviewed in this paper.Some new problems such as the diver-gence while a reactor is at critical,the count loss effect due to time interval between count-ing-gates,data synthesis technique for several sensors,correlated neutron emitted by neutron source are discussed.Finally,the author’s own opinion is put forward upon the difficulty that still exists about application of Feynman method.