γ能谱稳谱获取的研究  

A Study on acquiring steady gamma ray spectra

作　　者：谷鸣[1] 王功庆[1] 杨锦晴[1] 张映箕[1] 杨少琪 沈天健[1] 

机构地区：[1]中国科学院上海原子核研究所

出　　处：《核技术》1996年第12期712-716,共5页Nuclear Techniques

摘　　要：利用γ能谱光电峰的能量恒定和峰形不变的物理特性，提出一种以光电峰为基准的主动寻峰稳谱方法，以甄别阈为调整对象，直接作用于测量能窗的能量定位，保证能商相对能量的稳定．In the gamma ray measuring systems,the drifting problems of gamma ray spectra caused by the factors such as temperature variance, long measuring period and so on have been studied. Based on the steady energy and shape of a gamma photopeak,a method of searching peak and stabilizing spectrum is presented.Considering the photopeak as a criterion and the discriminating threshold as an adjustable object,the system is operated directly on the energy orientation of the energy windows measured,to ensure the stability of relative energy of the windows.

关 键 词：Γ能谱 稳谱 能窗 阈值 

分 类 号：TL817.2[核科学技术—核技术及应用]