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1 200 cm处在"有"和"无"混凝土墙防护情况下的吸收剂量率分别为12.200 0和2 090.000 0μGy/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。
Space dose distribution and inhabitant absorbed dose rate in typical residential area induced by indi- um - 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. 200 0 μGy/h and without it is 2 090. 000 0 μGy/h, vertical absorbed dose rate at- tenuates 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.
出处
《核电子学与探测技术》
CAS
CSCD
北大核心
2012年第8期977-980,共4页
Nuclear Electronics & Detection Technology
基金
湖南省核技术及应用重点学科
放射性测量与防护技术湖南省高校科技创新团队资助
