中国先进研究堆间接中子照相方法的初步研究

Preliminary Study on Indirect Neutron Radiography Method at CARR

摘要: 中国先进研究堆（CARR）的建成为我国间接中子照相技术的发展及应用提供了重要的实验平台。本文基于CARR开展了间接中子照相方法的初步研究。首先利用蒙特卡罗方法计算分析了基于CARR开展间接中子照相测量的条件；然后根据这些条件，通过解析计算确定了间接成像两次曝光过程的实验参数；最后利用CARR的热中子孔道，以核燃料元件模拟件为样品进行了间接中子照相实验，并研究了间接中子照相成像数据的处理及分析方法。

Abstract: China Advanced Research Reactor (CARR) is an excellent platform for indirect neutron radiography (INR). The experimental conditions of the INR at CARR were calculated and analyzed by the Monte Carlo method, based on which the first and the second exposure time was calculated. The INR experiment was carried out with the sample of dummy fuel rods at one of the CARR’s thermal neutron beam channel, and the methods of processing and analyzing the neutron images were also studied.