^(125)I粒子源在水中剂量分布的Monte Carlo模拟  

Dose Distribution of ^(125)I Source in Water by Means of Monte Carlo Simulation

作　　者：梅雪松[1] 张慧[1] 马玉刚[2] 赵广义[2] 周巍[1] 庞杨[1] 关世荣[1] 王雪航 

机构地区：[1]黑龙江省科学院技术物理研究所,哈尔滨150086 [2]吉林大学物理学院,长春130012 [3]黑龙江省卫生监督所,哈尔滨150001

出　　处：《吉林大学学报（理学版）》2011年第5期932-934,共3页Journal of Jilin University:Science Edition

基　　金：黑龙江省科技攻关项目(批准号:2009G0795-00)

摘　　要：采用Monte Carlo方法和热释光剂量计(TLD)法研究125I粒子源在水中的剂量分布,并对计算结果进行比较.结果表明:当粒子源活度为1.3×107 Bq,粒子源的径向距离分别为0.5,1.0,1.5,2 cm时,用蒙特卡洛方法(MCNP)软件包计算粒子源剂量率分别为11.7,3.3,1.5,0.8 mGy/h,TLD法测量结果分别为12.2,3.1,1.3,0.7 mGy/h;125I粒子源的径向剂量率随距离增加迅速下降.The dose distribution of 125I source in water was studied by means of Monte Carlo simulations and thermo luminescent dosemeter（TLD） method,and the results were compared.The results show that when 125I source activity was 1.37×107 Bq,the radial distances of 125I source were 0.5,1.0,1.5 and 2 cm,the dose rates of 125I with MCNP method were 11.7,3.3,1.5,0.8 mGy/h,TLD measurements were 12.2,3.1,1.3,0.7 mGy/h;125I source radial dose rate decreased rapidly with increasing distance.

关 键 词：蒙特卡洛方法 剂量率 热释光剂量计 125I粒子源 

分 类 号：O571.3[理学—粒子物理与原子核物理]