瞬发中子衰减常数测量模拟程序  

The Simulation Code for the Measurement of Prompt Neutron Decay Constant

作　　者：高辉[1] 宋凌莉[1] 李勐 文杰 周浩军[1] 尹延朋[1] 谢奇林[1] GAO Hui;SONG Lingli;LI Meng;WEN Jie;ZHOU Haojun;YIN Yanpeng;XIE Qilin(Institute of Nuclear Physics and Chemistry,China Academy of Engineering Physics,Mianyang 621900,China)

机构地区：[1]中国工程物理研究院核物理与化学研究所,绵阳621900

出　　处：《核电子学与探测技术》2023年第3期490-494,共5页Nuclear Electronics & Detection Technology

基　　金：国家自然科学基金(12175205)资助。

摘　　要：为研究瞬发中子衰变常数α的实验方法和改进相关测量技术,在中子输运程序的基础上,开发了α测量的模拟程序。可以模拟中子输运和α测量的全过程,利用该程序对球形金属装置的测量全过程进行了模拟,模拟结果均与设定的值一致。该程序实现了Rossi-α法的A/C值的计算和Feynman法测量过程模拟,从而弥补了普通中子输运程序的不足。In order to study the experimental method and improve technique of measuring prompt neutron decay constant(α),we develop a simulation code forαmeasurement based on the Monte Carlo neutron transport code.The code can simulate the neutron transport andαmeasurement process.It is used to simulate the experiment at the spherical metal assembly,and the simulation results are consistent with the set values.The code carried out the calculation of the A/C value in Rossi-αmethod and the simulation of the measurement process of Feynman method,which makes up for the deficiency of the ordinary neutron transport code.

关 键 词：瞬发中子衰减常数 测量模拟 Rossi-α法 Feynman法 

分 类 号：TL375[核科学技术—核技术及应用]