| 钨-铜合金影锥屏蔽体屏蔽性能的MCNP程序计算 |
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| 引用本文： | 朱传新,陈渊,牟云峰,郭海萍,王新华,安力. 钨-铜合金影锥屏蔽体屏蔽性能的MCNP程序计算[J]. 原子能科学技术, 2006, 40(1): 21-25. DOI: 10.7538/yzk.2006.40.01.0021 |
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| 作者姓名： | 朱传新 陈渊 牟云峰 郭海萍 王新华 安力 |
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| 作者单位： |
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| 摘 要： | 利用MCNP程序对影锥屏蔽体的屏蔽性能进行计算和深入分析。结果表明：影锥屏蔽体对于周围及样品造成的散射中子本底影响低于1.4%。中子穿透影锥屏蔽体而产生的γ射线泄漏率为10-16～10-14数量级，对于中子散射微分截面的实验测量，其影响可以忽略不计。W-Cu合金影锥屏蔽体的设计模型符合设计标准，就飞行距离为4～10 m的范围而言，影锥屏蔽体可使源中子注量衰减10-7，屏蔽效果显著。
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| 关 键 词： | 影锥屏蔽体 钨-铜合金 MCNP程序 中子注量 |
| 文章编号： | 1000-6931（2006）01-0021-05 |
| 收稿时间： | 2004-03-30 |
| 修稿时间： | 2004-03-302004-09-06 |
MCNP Calculation of Shielding Performance for W-Cu Shadow Shield |
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| ZHU Chuan-xin,CHEN Yuan,MU Yun-feng,GUO Hai-ping,WANG Xin-hua,AN Li. MCNP Calculation of Shielding Performance for W-Cu Shadow Shield[J]. Atomic Energy Science and Technology, 2006, 40(1): 21-25. DOI: 10.7538/yzk.2006.40.01.0021 |
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| Authors: | ZHU Chuan-xin CHEN Yuan MU Yun-feng GUO Hai-ping WANG Xin-hua AN Li |
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| Abstract: | Calculation and analysis of the shielding performance were carried out by MCNP program for shadow shield. The results show that the neutron scattering background causing by shadow shield is less than 1.4%. The gamma-ray leakage rate emitted from shadow shield with neutron is between 10-6~10-14, and its disturbance to measurements of neutron scattering differential cross section can be ignored. The designed configuration obeys the shadow shielding criteria, and in the range of 4～10 m flight-path, the direct fluence from the primary neutron source is attenuated by the shadow shield to a factor of 10-7, and the shielding effect is obvious. |
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| Keywords: | shadow shield W-Cu alloy MCNP program neutron fluence |
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