铋和钴在386兆电子伏特下的中子活化截面测量。
Measurements of the neutron activation cross sections for Bi and Co at 386 MeV.
作者信息
Yashima H, Sekimoto S, Ninomiya K, Kasamatsu Y, Shima T, Takahashi N, Shinohara A, Matsumura H, Satoh D, Iwamoto Y, Hagiwara M, Nishiizumi K, Caffee M W, Shibata S
机构信息
Research Reactor Institute, Kyoto University, Kumatori, Osaka 590-0494, Japan
Research Reactor Institute, Kyoto University, Kumatori, Osaka 590-0494, Japan.
出版信息
Radiat Prot Dosimetry. 2014 Oct;161(1-4):139-43. doi: 10.1093/rpd/nct334. Epub 2013 Dec 24.
Neutron activation cross sections for Bi and Co at 386 MeV were measured by activation method. A quasi-monoenergetic neutron beam was produced using the (7)Li(p,n) reaction. The energy spectrum of these neutrons has a high-energy peak (386 MeV) and a low-energy tail. Two neutron beams, 0° and 25° from the proton beam axis, were used for sample irradiation, enabling a correction for the contribution of the low-energy neutrons. The neutron-induced activation cross sections were estimated by subtracting the reaction rates of irradiated samples for 25° irradiation from those of 0° irradiation. The measured cross sections were compared with the findings of other studies, evaluated in relation to nuclear data files and the calculated data by Particle and Heavy Ion Transport code System code.
采用活化法测量了铋（Bi）和钴（Co）在386兆电子伏特下的中子活化截面。利用（7）锂（p，n）反应产生了准单能中子束。这些中子的能谱有一个高能峰（386兆电子伏特）和一个低能尾。使用了与质子束轴成0°和25°的两束中子束对样品进行辐照，从而能够校正低能中子的贡献。通过从0°辐照的辐照样品的反应速率中减去25°辐照的反应速率来估算中子诱发的活化截面。将测量的截面与其他研究结果进行了比较，并根据核数据文件以及粒子与重离子输运代码系统（Particle and Heavy Ion Transport code System，简称PHITS）代码的计算数据进行了评估。
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