摘要
用蒙特卡罗方法模拟计算高气压电离室对60Co和137Cs源的空气吸收剂量率因子,并在标准参考辐射场中进行对应刻度。计算和刻度结果表明:对137Cs点源,高气压电离室空气吸收剂量率因子的计算值与刻度值间的相对偏差为0.65%;对60Co点源,两者之间的相对偏差为-5.5%。计算值与刻度值在不确定度内一致。
The air absorbed dose rate factor of high-pressure ionization chamber was calculated by Monte-Carlo method for ^60Co and ^137 Cs source, and the calculated result was compared with the calibrated result in the standard reference gamma radiation field of ^60Co and laTCs. The relative deviation between calculated and calibrated value is 0.65% for ^137 Cs reference gamma radiation, and is -5.5% for ^60 Co reference gamma radiation. The results from two methods are accorded with each other in the range of uncertainty.
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
2006年第5期632-634,共3页
Atomic Energy Science and Technology
关键词
高气压电离室
空气吸收剂量率因子
蒙特卡罗方法
high-pressure ionization chamber
air absorbed dose rate factor
Monte-Carlo method
