Measurement of gamma-ray production from thermal neutron capture on gadolinium for neutrino experiments
Measurement of gamma-ray production from thermal neutron capture on gadolinium for neutrino experiments
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DOI：
10.1016/j.nima.2016.06.084
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发表时间：
2017-02
影响因子：
1.4
通讯作者：
T. Yano
中科院分区：
文献类型：
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作者：
T. Yano
近年来，钆在中微子物理实验中有着广泛的应用。钆-157是所有稳定核中具有最大热中子俘获截面的核。钆-155也具有较大的横截面。这些中子俘获反应为伽马射线级联提供了约8 MeV的总能量。该反应被应用于反应堆中微子实验和掺Gd大型水切伦科夫探测器实验等多种中微子实验中，以识别反β衰变反应，需要一个好的Gd（n，γ）模拟模型来评估中子俘获反应的探测效率，即IBD探测效率。本文将介绍Gd（n，γ）计算模型的发展和研究现状，并与我们在日本PARC的ANNRI/MLF束线上获得的实验数据进行比较。
Recently, several scientific applications of gadolinium are found in neutrino physics experiments. Gadolinium-157 is the nucleus, which has the largest thermal neutron capture cross-section among all stable nuclei. Gadolinium-155 also has the large cross-section. These neutron capture reactions provide the gamma-ray cascade with the total energy of about 8 MeV. This reaction is applied for several neutrino experiments, e.g. reactor neutrino experiments and Gd doped large water Cherenkov detector experiments, to recognize inverse-beta-decay reaction.A good Gd(n,γ) simulation model is needed to evaluate the detection efficiency of the neutron capture reaction, i.e. the efficiency of IBD detection. In this presentation, we will report the development and study status of a Gd(n,γ) calculation model and comparison with our experimental data taken at ANNRI/MLF beam line, J-PARC.