【作者】 李小华； 于涛； 夏勇； 凌球；

【Author】 LI Xiao-hua,YU-tao,XIA-yong,LING Qiu (School of Nuclear Science & technology,University of South China,HengYang,HuNan,421001,China)

【机构】 南华大学核科学技术学院；

【摘要】 根据中国原子能科学研究院铱-192工业探伤源物理参数,采用蒙特卡罗方法程序(MCNP)计算了铱-192源在典型居民区的空间剂量分布和居民的吸收剂量率。结果表明:水平方向1200cm处在"有"和"无"混凝土墙防护情况下的吸收剂量率分别为12.2000μGy/h和2090.0000μGy/h,垂直方向吸收剂量率随位置呈指数衰减;铱-192源所存放2#居民楼3楼层以上住户的吸收剂量率低于USNRC限值。计算结果将为铱-192放射源事故的评估和受照人群的医学治疗提供参考。更多还原

【Abstract】 Space dose distribution and inhabitant absorbed dose rate in typical residential area induced by indium-192, which based on physics parameter of China Institute of Atomic Energy industrial radiography indium-192 source is calculated by Monte Carlo methods code MCNP.Results show that horizontal absorbed dose rate with concrete wall is 12.2000μGy/h and without it is 2090.0000μGy/h,vertical absorbed dose rate attenuates with exponential law,that absorbed dose rate of inhabitant who bide over 3 floor in 2 # dwelling house is under the limit value of USNRC.The calculated results will provide a reference for evaluation of indium-192 source accident and therapeutic treatment of irradiated crowd.更多还原