一种镅/铍中子源及其在微分中子反应截面数据整体测试中的应用。
An Am/Be neutron source and its use in integral tests of differential neutron reaction cross-section data.
作者信息
Uddin M S, Zaman M R, Hossain S M, Spahn I, Sudár S, Qaim S M
机构信息
Department of Applied Chemistry and Chemical Technology, Rajshahi University, Rajshahi, Bangladesh.
出版信息
Appl Radiat Isot. 2010 Sep;68(9):1656-61. doi: 10.1016/j.apradiso.2010.02.006. Epub 2010 Feb 20.
An Am/Be neutron source, installed recently at the Rajshahi University, is described. Neutron flux mapping was done using the nuclear reactions (197)Au(n,gamma)(198)Au, (113)In(n,gamma)(114m)In, (115)In(n,n'gamma)(115m)In and (58)Ni(n,p)(58)Co. An approximate validation of the neutron spectral shape was done using five neutron threshold detectors and the iterative unfolding code SULSA. Integral cross sections of the reactions (54)Fe(n,p)(54)Mn, (59)Co(n,p)(59)Fe and (92)Mo(n,p)(92m)Nb were measured with fast neutrons (E(n)>1.5MeV) and compared with data calculated using the neutron spectral distribution and the excitation function of each reaction given in data libraries: an agreement within +/-6% was found.
描述了最近安装在拉杰沙希大学的一个镅/铍中子源。利用核反应（197）Au（n，γ）（198）Au、（113）In（n，γ）（114m）In、（115）In（n，n'γ）（115m）In和（58）Ni（n，p）（58）Co进行了中子通量映射。使用五个中子阈值探测器和迭代展开代码SULSA对中子能谱形状进行了近似验证。用快中子（E（n）>1.5MeV）测量了反应（54）Fe（n，p）（54）Mn、（59）Co（n，p）（59）Fe和（92）Mo（n，p）（92m）Nb的积分截面，并与使用数据库中给出的每个反应的中子能谱分布和激发函数计算的数据进行了比较：发现两者的一致性在±6%以内。
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