400 ~ 1200 MeV质子辐照铁靶后向中子能谱的CTOF测量和Monte Carlo分析
The CTOF measurements and Monte Carlo analyses of neutron spectra for backward direction from iron target irradiated by protons with energies from 400 to 1200 MeV
摘要：
采用量热飞行时间（CTOF）技术，在与初始质子束方向成175 °角处，对撞击直径为20 cm、厚为25 cm的圆柱形铁靶的中子能谱进行了实时、高精度的测量。对0.4、0.6、0.8、1.0和1.2 GeV质子的MARS和MCNPX程序系统预测的中子能谱和实验测量的中子能谱进行了比较。
英文摘要：
A calorimetric-time-of-flight (CTOF) technique was used for real-time, high-precision measurement of neutron spectrum at the angle of 175 degrees from the initial proton beam direction, which hits a face plane of a cylindrical iron target of 20 cm in diameter and 25 cm thick. A comparison was performed between the neutron spectra predicted by the MARS and the MCNPX code systems and measured by experiments for 0.4-, 0.6-, 0.8-, 1.0-, and 1.2-GeV protons.
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