| 多方向加权方法在D-T聚变中子能谱测量中的应用 |
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| 引用本文： | 王冠鹰,韩然,欧阳晓平. 多方向加权方法在D-T聚变中子能谱测量中的应用[J]. 辐射防护, 2017, 37(5): 341-346 |
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| 作者姓名： | 王冠鹰 韩然 欧阳晓平 |
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| 作者单位： | 1.华北电力大学核科学与工程学院,北京 102206; 2.北京卫星环境工程研究所,北京 100029; 3.西北核技术研究所,西安 710024 |
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| 基金项目： | 中央高校基本科研业务费专项，强脉冲辐射环境模拟与效应国家重点实验室对外开放课题资助 |
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| 摘 要： | 中子能谱是研究和诊断核反应过程特性最重要的特征量之一。建立了一种新的多方向加权方法用于D-T聚变中子能谱测量:在反冲质子出射方向的多个不同角度上,同时布置探测器,最终的中子能谱由各方向所获取的反冲质子能谱结合相应的权重值确定。Geant4模拟结果显示,多方向加权方法可以提升探测效率和求解结果精度。利用多方向加权方法对高斯分布中子源以及实际的D-T聚变中子能谱进行测量模拟与求解分析,分析结果验证了该方法的可行性和有效性。
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| 关 键 词： | 中子能谱 D-T聚变 多方向加权方法 Geant4 |
| 收稿时间： | 2017-06-12 |
Application of multi-directional weighting method in D-T fusion neutron spectrum measurement |
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| Wang Guanying,Han Ran,Ouyang Xiaoping. Application of multi-directional weighting method in D-T fusion neutron spectrum measurement[J]. Radiation Protection, 2017, 37(5): 341-346 |
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| Authors: | Wang Guanying Han Ran Ouyang Xiaoping |
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| Affiliation: | 1. School of nuclear science and engineering, North China Electric Power University, Beijing 102206; 2. Beijing Institute of Spacecraft Environment Engineering, Beijing 100029; 3. Northwest Institute of Nuclear Technology, Xi'an 710024 |
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| Abstract: | Neutron energy spectrum is one of the most important characteristic parameters in the diagnosis of nuclear reaction process.Multi-directional weighting method was established for D-T fusion neutron spectrum measurement.The detectors were arranged at several different angles of the recoil proton outgoing direction.The final neutron spectrum was determined by the recoil proton spectrum and its corresponding weight values.The Geant4 simulation results showed that,compared with single direction detection,the multi-directional weighting method could improve the detection efficiency and the solution accuracy.The simulation data of multidirectional weighting method were compared with the neutron source and actual D-T fusion energy spectrum,and the practicability and validity of the method were verified. |
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| Keywords: | neutron energy spectrum D-T fusion multi-directional weighting method Geant4 |
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