A function to provide neutron spectrum produced from the 9Be + p reaction with protons of energy below 12 MeV
A function to provide neutron spectrum produced from the 9Be + p reaction with protons of energy below 12 MeV
复制标题
提供 9Be p 反应产生的中子谱的功能，质子能量低于 12 MeV
DOI：
10.1080/00223131.2018.1445566
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发表时间：
2018
影响因子：
1.2
通讯作者：
Y. Otake
中科院分区：
文献类型：
--
作者：
Y. Wakabayashi;A. Taketani;T. Hashiguchi;Y. Ikeda;Tomohiro Kobayashi;Sheng Wang;M. Yan;M. Harada;Yujiro Ikeda;Y. Otake
摘要 通过拟合实验数据，创建了通过 9Be + p 反应给出总中子产生截面、角度分布和能谱的函数，以表征由能量低于 12 MeV 的质子轰击厚 Be 靶的紧凑中子源。为了检验该函数的适用性，使用该函数在具有 4-MeV 和 12-MeV 质子的厚 Be 靶中产生的角度相关中子能谱的计算与使用 ENDF/B-VII.0 和 JENDL4.0/HE 核数据库的相应实验和计算进行了比较。除了向后角度外，该函数与使用库进行的计算相比，与实验的一致性更好。使用 GEANT4 计算出的 115In(n,n’)115mIn 反应速率以及由函数和 ENDF/B-VII.0 给出的中子源，与 RIKEN 加速器驱动紧凑中子源测量的反应速率进行比较，以评估 1 MeV 以上的中子谱。该函数略微高估了测量值 14%，而使用 ENDF/B-VII.0 的计算则低估了 35%。结论是该函数可应用于紧凑型中子源设计。
ABSTRACT A function to give the total neutron production cross section, angular distribution, and energy spectrum via the 9Be + p reaction has been created by fitting experimental data to characterize compact neutron sources with thick Be targets bombarded by protons with energy below 12 MeV. To examine the suitability of the function, calculations of the angle-dependent neutron energy spectra produced in thick Be targets with 4- and 12-MeV protons using the function were compared with corresponding experiments and calculations using the nuclear data libraries of ENDF/B-VII.0 and JENDL4.0/HE. The function was in better agreement with the experiments than the calculations using the libraries except for at backward angles. The 115In(n,n’)115mIn reaction rates calculated using GEANT4 with source neutrons given by both the function and ENDF/B-VII.0 were compared with that measured at the RIKEN Accelerator-Driven Compact Neutron Source to evaluate the neutron spectrum above 1 MeV. The function slightly overestimated the measurement by 14% and the calculation with ENDF/B-VII.0 underestimated by 35%. It was concluded that the function can be applied in compact neutron source designs.
影响因子：
1.2
作者：
Sato, Tatsuhiko;Niita, Koji;Sihver, Lembit
通讯作者：
Sihver, Lembit