| keV能区单能中子参考辐射场核反应靶设计 |
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| 引用本文： | 李玮,陈军,李春娟,刘毅娜,王志强,骆海龙,张伟华.keV能区单能中子参考辐射场核反应靶设计[J].原子能科学技术,2013,47(10):1670-1673. |
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| 作者姓名： | 李玮 陈军 李春娟 刘毅娜 王志强 骆海龙 张伟华 |
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| 作者单位： | 中国原子能科学研究院，北京102413 |
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| 摘 要： | 质子轰击中等质量靶核是产生keV能区单能中子的一种常用方法。选择45Sc(p,n)45Ti反应中子源作为keV能区单能中子参考辐射场的中子源，利用FloWizard软件模拟大束流条件下核反应靶的温度分布，分析了影响靶温度分布的主要因素。利用Target程序模拟核反应靶出射中子能谱，分析了不同材料的散射中子本底。同时精细调节5SDH 2加速器端电压，测量了薄靶（Sc）的激发曲线，测量结果与NPL和PTB的接近。
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| 关 键 词： | keV能区 单能中子 靶 散射 |
Target Designing of Monoenergetic Neutron Calibration Fields in keV Region |
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| LI Wei,CHEN Jun,LI Chun-juan,LIU Yi-na,WANG Zhi-qiang,LUO Hai-long,ZHANG Wei-hua.Target Designing of Monoenergetic Neutron Calibration Fields in keV Region[J].Atomic Energy Science and Technology,2013,47(10):1670-1673. |
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| Authors: | LI Wei CHEN Jun LI Chun-juan LIU Yi-na WANG Zhi-qiang LUO Hai-long ZHANG Wei-hua |
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| Affiliation: | China Institute of Atomic Energy, Beijing 102413, China |
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| Abstract: | The monoenergetic neutron calibration fields in keV region were established using 45Sc(p，n)45Ti reaction. The target temperature distribution on condition of high intensity was simulated by FloWizard program. The main factors which affect temperature distribution of target were analyzed. The neutron energy spectrum was simulated by Target program. And then the curve of proton energy vs neutron yield was measured using standard long counter by finely adjusting 5SDH2 accelerator voltage. Neutron peaks corresponding to the resonances were observed, which is similar with that of NPL and PTB. |
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| Keywords: | keV region monoenergetic neutron target scattering |
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