用蒙特卡罗方法研究球形充气电离室的能量响应特性  

Energy Response Characteristics of Ionization Chamber by Using Monte-Carlo Method

作　　者：王红艳[1] 肖雪夫[1] 马永福[1] 

机构地区：[1]中国原子能科学研究院保健物理部,北京102413

出　　处：《原子能科学技术》2006年第6期729-731,共3页Atomic Energy Science and Technology

摘　　要：环境γ辐射监测用的电离室要求平能量响应。为使球形不锈钢充氩电离室能够达到能量响应指标要求,采用蒙特卡罗方法对充气电离室壁、充气气体、收集极、屏蔽材料、屏蔽厚度及屏蔽面积等因素进行模拟计算．为改善球形充气电离室的能量响应特性和拓展其最低探测能量提供依据。A flat energy response characteristic is required for the gas-filled ionization chamber used in environmental gamma radiation monitoring. Based on the energy response, the factors such as the wall, gas, electrode, shielding materials and its thickness and area of the spherical argon-filled chamber of stainless steel are studied by Monte-Carlo simulation method in the paper. The aim is to reach a energy response with variation less than 30% over the energy range from 65 keV to 6 MeV.

关 键 词：蒙特卡罗方法 充气电离室 能量响应特性 最低探测能量 

分 类 号：TL811.1[核科学技术—核技术及应用]