利用衰变产物间接测量快中子活化截面的研究  

Study on Indirect Measurement of Fast Neutron Activation Cross Section by Using Decay Product

作　　者：邱奕嘉 刘通 占许文 兰长林[1] 孔祥忠[1] QIU Yijia;LIU Tong;ZHAN Xuwen;LAN Changlin;KONG Xiangzhong(School of Nuclear Science and Technology,Lanzhou University,Lanzhou 730000,China)

机构地区：[1]兰州大学核科学与技术学院,甘肃兰州730000

出　　处：《原子能科学技术》2018年第10期1729-1734,共6页Atomic Energy Science and Technology

基　　金：中央高校基本科研业务费专项资金资助项目(lzujbky-2017-98)

摘　　要：在采用活化法以及离线γ谱技术测量238 U和232 Th的(n,γ)快中子反应截面的过程中,需使用反应生成核的一次β衰变产物的活度间接定量反应生成核的活度,从而反推得到截面。本文将对原有公式进行修正,并作详细推导。同时,基于修正公式,对这一方法进行分析讨论,以说明该方法的可行性以及在使用过程中存在的问题。In the process of measuring the cross section of the(n,γ)reactions of 238 U and 232 Th by the activation method,the activity of the primaryβdecay products produced by the reaction products is often used for indirect measurement,thereby the cross section can be obtained.The original formula was modified and the detailed derivation was given in this paper.At the same time,this method was analyzed and discussed based on the revised formula to illustrate the feasibility of this method and the problems in the process of the use.

关 键 词：活化法 间接测量 修正公式 

分 类 号：O571.55[理学—粒子物理与原子核物理]