【作者】 商建波； 师全林；

【Author】 SHANG Jian-bo~(1,2),SHI Quan-lin~2 (1.Tsinghua University;2.Northwest Nuclear Technology Institute)

【机构】 清华大学； 西北核技术研究所；

【摘要】 计算地面核爆炸或近地核爆炸情况下剩余放射性在爆心附近区域的分布,确定不同区域的剂量率,以减少人员及装备的辐射损伤,是核爆炸后放射性沉降预报的主要目的。本文拟通过经验公式描述稳定烟云特征,利用圆盘投掷法模拟粒子输运过程,结合Freiling-Tompkin半经验模型计算不同粒径粒子中放射性核素含量,形成了放射性沉降预报的简易模型。利用该模型计算了四种地面爆炸或浅层地下爆炸情形,发现模型合理可用,具有一定的精确度。更多还原

【Abstract】 By calculation of distribution of radioactive particles near ground zero and ionizing radiation dose field with fallout prediction system,reasonable decision can be made to reduce radiation damage on people and equipment.With empirical formula describing stable cloud,disc throwing method to simulate particle transport,the Freiling-Tompkin semi-empirical model to calculate total activity in different size particles,a simple fallout prediction model was made.Using this model,fallout after four ground explosions or shallow underground explosions were predicted,and the results show that this model is reasonable and useable.更多还原