| 14 MeV中子防护体设计的MCNP模拟 |
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| 引用本文： | 兰民,张敬傑,程道文. 14 MeV中子防护体设计的MCNP模拟[J]. 吉林大学学报(理学版), 2015, 53(2): 316-319 |
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| 作者姓名： | 兰民 张敬傑 程道文 |
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| 作者单位： | 1. 长春工业大学 基础科学学院, 长春 130012; 2. 吉林大学 物理学院， 长春 130012 |
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| 基金项目： | 国家自然科学基金(批准号:11305019) |
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| 摘 要： | 用富氢材料防护产额为108个/s的D T中子发生器, 当富氢材料厚度大于76 cm时, 其中子辐射剂量低于0.025 mSv/h. 为降低防护体厚度, 用铜和含硼聚乙烯组成的双层材料作为14 MeV中子防护体. Monte Carlo(MCNP)计算结果表明, 若中子辐射剂量小于0.025 mSv/h, 则双层材料的最小厚度为52 cm, 硼的质量分数为1.00%, 铜和含硼聚乙烯的厚度分别为37 cm和15 cm.
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| 关 键 词： | D-T中子发生器 中子防护材料 铜 含硼聚乙烯 |
| 收稿时间： | 2014-10-30 |
14 MeV Neutron Shielding Material Designed by MCNP Code |
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| LAN Min;ZHANG Jingjie;CHENG Daowen. 14 MeV Neutron Shielding Material Designed by MCNP Code[J]. Journal of Jilin University: Sci Ed, 2015, 53(2): 316-319 |
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| Authors: | LAN Min ZHANG Jingjie CHENG Daowen |
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| Affiliation: | 1. School of Basic Sciences, Changchun University of Technology, Changchun 130012, China;2. College of Physics, Jilin University, Changchun 130012, China |
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| Abstract: | If hydrogen rich material is used to shield the 14 MeV neutrons produced by D-T neutron generator whose neutron yield is 108 n/s, its thickness must be more than 76 cm to make the neutron radiation dose less than 0.025 mSv/h. In order to decrease the thickness, the bilayer material consisted of copper and boron polyethylene was used as 14 MeV neutron shielding material. The result of the calculation shows that the minimum thickness of the bilayer
material is 52 cm, in which the thicknesses of copper and boron polyethylene are 37 cm and 15 cm and the content of boron is 1.00%. |
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| Keywords: | D-T neutron generator neutron shielding material copper boron polyethylene |
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