钨、镍组合及钨镍合金的辐射屏蔽性能模拟
核救灾机器人对核事故现场救援和灾后处理具有重要意义,而核救灾机器人的电子器件易因受γ射线照射而失效,材料屏蔽的方法可提高电子器件的耐辐射性能。本文综合考察了Ni-W、W-Ni及钨镍合金三种复合结构模型的屏蔽性能。采用蒙特卡罗方法分别计算了不同材料厚度、元素体积比和屏蔽层数下三种模型的γ射线透射能谱。结果发现：采用Ni-W或钨镍合金方式的屏蔽效果较好,特别是在低能范围（0-0.6 Me V）优势更加明显。钨含量增加后三种模型的屏蔽结果趋近。同时,层数变化和辐照源为单向面源或单向点源对屏蔽结果影响不大。...
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| Published in | 核技术 Vol. 38; no. 1; pp. 23 - 28 |
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| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
承压系统与安全教育部重点实验室,华东理工大学机械与动力工程学院 上海,200237%华东理工大学材料科学与工程学院 上海200237
2015
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| Subjects | |
| Online Access | Get full text |
| ISSN | 0253-3219 |
| DOI | 10.11889/j.0253-3219.2015.hjs.38.010204 |
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| Summary: | 核救灾机器人对核事故现场救援和灾后处理具有重要意义,而核救灾机器人的电子器件易因受γ射线照射而失效,材料屏蔽的方法可提高电子器件的耐辐射性能。本文综合考察了Ni-W、W-Ni及钨镍合金三种复合结构模型的屏蔽性能。采用蒙特卡罗方法分别计算了不同材料厚度、元素体积比和屏蔽层数下三种模型的γ射线透射能谱。结果发现：采用Ni-W或钨镍合金方式的屏蔽效果较好,特别是在低能范围（0-0.6 Me V）优势更加明显。钨含量增加后三种模型的屏蔽结果趋近。同时,层数变化和辐照源为单向面源或单向点源对屏蔽结果影响不大。 |
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| Bibliography: | γ-ray, Shielding materials, Monte Carlo method HAN Zhongwu LUAN Weiling HAN Yanlong ZHANG Yan WU Guozhang 1 （Key Laboratory of Pressure System and Safety, Ministry of Education, School of Mechanical and Power Engineering East China University of Science and Technology, Shanghai 200237, China） 2（School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China） 31-1342/TL Background： Nuclear disaster rescue robots are of earnest desire for on-site rescue and post processing. The electronic devices of robots are quite sensible to operation condition, which could be suddenly destroyed by the γ-ray. Shielding is one of the effective methods that can enhance the anti-radiation properties of the protected content. Purpose： This paper sets up three types of combination models, W-Ni, Ni-W and their alloys, aiming at the protection effect towards γ-ray. Methods： The transmission and energy spectrum under γ-ray were simulated on the models with various thicknesses, W：Ni v |
| ISSN: | 0253-3219 |
| DOI: | 10.11889/j.0253-3219.2015.hjs.38.010204 |