舰船核辐射防护领域中的蒙特卡洛方法应用

摘要

假设核动力舰船发生放射性物质泄漏事件,建立水立方模型与含骨层的水立方模型,选取多种能量的光子源,通过蒙特卡洛粒子输运程序MCNP5对模型关注栅元进行能量沉积模拟计算.结果表明,在制定核动力航母的辐射防护系统初步方案时,不仅要从宏观层面考虑到船员的年平均有效吸收剂量,还有必要结合人体各个器官的耐受剂量特点,对各器官的年当量剂量做出严格的规定.%Assuming a possible incident of radioactive material leakage occurred in the nuclear-powered ship,a water phantom and a water phantom containing a bone layer were established respectively.Using MCNP5,energy deposition in typical cells was calculated with some kinds of photon sources.The results showed that when making plans for radiation protection of the nuclear-powered ship,strict rules of annual equivalent dose for different organs combining their characteristic are necessitated.