测量反应堆反应性的费曼方法综述  

Research Progress of Feynman Method to Measure Reactivity

作　　者：李凤宇 彭柳 吴国东 章军 

机构地区：[1]武汉第二船舶设计研究院,湖北武汉

出　　处：《核科学与技术》2019年第3期98-104,共7页Nuclear Science and Technology

摘　　要：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.

关 键 词：反应性 费曼方法 加速器驱动次临界系统 

分 类 号：TL3[核科学技术—核技术及应用]