【作者】 吴正新； 孙慧斌； 刘国卿； 赵海歌； 童永彭； 马玉刚； 呼延奇；

【Author】 WU Zheng-xin;SUN Hui-bin;LIU Guo-qing;ZHAO Hai-ge;TONG Yong-peng;MA Yu-gang;HU Yan-qi;Institute of nuclear technology,Shenzheng University;College of physics,Jilin University;Beijing Institute of Spacecraft System Engineering;

【机构】 深圳大学核技术研究所； 吉林大学物理学院； 北京空间飞行器总体设计部；

【摘要】 通过蒙特卡罗程序Geant4模拟计算了空间中典型能量为56 GeV铁离子穿过4种屏蔽材料后水模体的剂量深度分布以及次级剂量分布,分析比较了空间飞行器舱内水模体的总吸收剂量。计算结果表明,56 GeV铁离子穿过4种等质量厚度的屏蔽材料之后,聚乙烯的屏蔽性能最好,其次是水,碳纤维,最后是传统材料铝。部分计算结果与美国航天局空间辐射实验室测试结果相比,两者吻合较好。更多还原

【Abstract】 The total absorbed dose at the whole water phantom behind targets such as Polyethylene,Aluminum,Water and Carbon fiber have also been calculated using the Geant4 simulation code.Total and the different secondary particles dose depth distribution are estimated in the water phantom by Monte-Carlo simulation of particle transportation.The calculated results are analysed,compared,and discussed.The results show polyethylene is the best space radiation shielding material for a given areal density,followed the water,carbon fiber,and aluminum.And some of the calculation results are in good agreement with the NASA space radiation laboratory test results.更多还原