Streaming of 14-MeV Neutrons Through an Iron Duct—Comparison of Measured Neutron and Gamma-Ray Energy Spectra with Results Calculated Using the Monte Carlo MCNP Code
Streaming of 14-MeV Neutrons Through an Iron Duct—Comparison of Measured Neutron and Gamma-Ray Energy Spectra with Results Calculated Using the Monte Carlo MCNP Code
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14 MeV 中子流穿过铁管 - 测量的中子和伽马射线能谱与使用蒙特卡罗 MCNP 代码计算的结果的比较
DOI：
10.13182/nse83-a17794
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发表时间：
1983
期刊：
影响因子：
--
通讯作者：
P. Soran
中科院分区：
文献类型：
--
作者：
R. Santoro;J. Barnes;R. Alsmiller;P. Soran
使用蒙特卡罗代码 MCNP 计算了 14 MeV 中子流通过 0.30 米直径管道（长径比 = 2.83）产生的中子和伽马射线能谱。将计算出的光谱与测量数据以及先前使用离散坐标和蒙特卡罗方法相结合计算的数据进行比较。在管道轴内外的 12 个探测器位置对能量高于 850 keV 的中子和能量高于 750 keV 的伽马射线进行了比较。使用 MCNP 计算的中子谱与测量数据在大约 10 以内一致。 5 至约。 50%，取决于探测器位置和中子能量。与测量的伽马射线光谱的一致性也在大约范围内。 5 至约。 50%。使用 MCNP 获得的光谱也与之前计算的数据非常吻合，并且计算量较少。
Neutron and gamma-ray energy spectra resulting from the streaming of 14 MeV neutrons through a 0.30-m-diameter duct (length-to-diameter ratio = 2.83) have been calculated using the Monte Carlo code MCNP. The calculated spectra are compared with measured data and data calculated previously using a combination of discrete ordinates and Monte Carlo methods. Comparisons are made at twelve detector locations on and off the duct axis for neutrons with energies above 850 keV and for gamma rays with energies above 750 keV. The neutron spectra calculated using MCNP agree with the measured data within approx. 5 to approx. 50%, depending on detector location and neutron energy. Agreement with the measured gamma-ray spectra is also within approx. 5 to approx. 50%. The spectra obtained with MCNP are also in favorable agreement with the previously calculated data and were obtained with less calculational effort.