Measurement of Angular-Dependent Neutron Production with 140-MeV Protons
Measurement of Angular-Dependent Neutron Production with 140-MeV Protons
复制标题
使用 140 MeV 质子测量角相关中子产生
DOI：
10.13182/nt09-a9205
复制
发表时间：
2009
影响因子：
1.5
通讯作者：
K. Hatanaka
中科院分区：
文献类型：
--
作者：
Y. Iwamoto;D. Satoh;M. Hagiwara;H. Iwase;Y. Kirihara;H. Yashima;Y. Nakane;H. Nakashima;Takashi Nakamura;A. Tamii;K. Hatanaka
在大阪大学核物理研究中心中子飞行时间(TOF)课程的辐照室内，测量了停长石墨、铝、铁和铅靶产生的90°中子能谱和140 MeV质子轰击锂靶产生的180°中子能谱。用飞行时间技术获得了从10 MeV到140 MeV的入射质子能量范围内的中子能谱。将90°厚靶核的实验数据与粒子和重离子输运程序系统(PHITS)的计算结果进行了比较。结果表明，利用估算的核数据，PHITS能够重现90℃的次级中子谱。用PHITS核物理模型和蒙特卡罗N粒子扩展程序(MCNPX)对180°薄靶的实验数据进行了比较。我们发现，这两个程序在180℃的温度下，在10 MeV以上的中子能区都能很好地工作。
Abstract Neutron energy spectra at 90 deg produced from stopping-length graphite, aluminum, iron, and lead targets and at 180 deg produced from a thin lithium target bombarded with 140-MeV protons were measured in the irradiation room of the neutron time-of-flight (TOF) course at the Research Center of Nuclear Physics of Osaka University. The neutron energy spectra were obtained by using the TOF technique in the energy range from 10 MeV to the incident proton energy of 140 MeV. The experimental data for a thick target at 90 deg were compared with calculations performed with the Particle and Heavy Ion Transport code System (PHITS) using the evaluated nuclear data. It was shown that PHITS using the evaluated nuclear data is able to reproduce the secondary neutron spectra at 90 deg. The experimental data for a thin target at 180 deg were compared with calculations using the nuclear physics models in PHITS and the Monte Carlo N-Particle eXtended code (MCNPX). We found that the two codes work well at 180 deg in the neutron energy region above 10 MeV.