JENDL-4.0/HE的ACE库

N. Matsuda, S. Kunieda, Tsutomu Okamoto, Kenichi Tada, C. Konno
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引用次数: 6

摘要

通用蒙特卡罗模拟代码中采用的核内级联模型并不总是适用于20mev到几百MeV的能量区域。为了提高包含该能量区域的蒙特卡罗模拟的准确性,2015年,日本评估核数据库高能文件(JENDL-4.0/HE)作为一种新的专用文件发布了第四版。它包括分别对130和133核的入射中子和质子在200 MeV时的截面进行评估。用核数据处理代码NJOY2016.9编制了MCNP、MCNPX和PHITS编码中所有中子和质子诱导反应数据的紧凑版ENDF (ACE)库。由于原NJOY将实验室角能分布形式(LAW=67)自动转换为连续能角分布形式(LAW=61),而PHITS只能处理质子的角能分布形式(LAW=67),因此修改为保留质子ACE库中的实验室角能分布形式(LAW=67)。通过PHITS高能屏蔽实验的基准计算,对ACE库进行了验证。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
ACE library of JENDL-4.0/HE
The Intra-Nuclear Cascade model employed into general-purpose Monte-Carlo simulation codes is not always applicable in the energy region from 20 MeV to several hundreds of MeV. In order to improve accuracy of the Monte-Carlo simulations including this energy region, the fourth version of Japanese Evaluated Nuclear Data Library High Energy File (JENDL-4.0/HE) as a new special purpose file, was released in 2015. It includes evaluated cross-sections for incident neutrons and protons up to 200 MeV for 130 and 133 nuclei, respectively. A Compact version of ENDF (ACE) library of all the neutronand proton-induced reaction data for the MCNP, MCNPX and PHITS codes has been produced with the nuclear data processing code NJOY2016.9, which was modified to keep laboratory angle-energy distribution form (LAW=67) in the ACE library of proton because the original NJOY converts laboratory angle-energy distribution form (LAW=67) to continuum energy-angle distribution form (LAW=61) automatically and PHITS can only treat angle-energy distribution form (LAW=67) for proton. Validations for the ACE library were performed through benchmark calculations for high-energy shielding experiments with PHITS.
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