Measurements of neutron spectra produced from a thick lead target bombarded with 0.5- and 1.5-GeV protons
Measurements of neutron spectra produced from a thick lead target bombarded with 0.5- and 1.5-GeV protons
复制标题
测量用 0.5-GeV 和 1.5-GeV 质子轰击的厚铅靶产生的中子谱
DOI：
10.1016/s0168-9002(99)00282-x
复制
发表时间：
1999
影响因子：
1.4
通讯作者：
M. Numajiri
中科院分区：
文献类型：
--
作者：
S. Meigo;H. Takada;S. Chiba;T. Nakamoto;K. Ishibashi;N. Matsufuji;K. Maehata;N. Shigyo;Y. Watanabe;M. Numajiri
测量了0.5和1.5GeV质子轰击厚铅靶产生的中子能谱，为中能粒子输运计算提供了实验数据。在1.6 - 150 MeV能区获得了准确的中子能谱。实测数据与NMTC/JAERI-MCNP-4A程序系统的计算结果进行了比较。对于能量小于10 MeV的低能区，计算结果与实验结果吻合较好。然而，在20 - 80 MeV的能量范围内，它给出了大约50%的低中子通量。利用介质中核子-核子散射截面，减小了这种不一致。
Neutron spectra produced from a thick lead target bombarded with 0.5 and 1.5GeV protons have been measured in order to provide experimental data for benchmarking the medium-energy particle transport calculations. The accurate neutron spectra were obtained in the energy region between 1.6 and 150MeV. The measured data have been compared with the calculated results of an NMTC/JAERI-MCNP-4A code system. The calculation reproduces the experiment fairly well for the lower energy less than 10MeV. It, however, gives about 50% lower neutron flux in the energy region between 20 and 80MeV. By using the in-medium nucleon–nucleon scattering cross sections, this disagreement has been reduced.