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論文

ACE library of JENDL-4.0/HE

松田 規宏; 国枝 賢; 岡本 力*; 多田 健一; 今野 力

Progress in Nuclear Science and Technology (Internet), 6, p.225 - 229, 2019/01

Intra-Nuclear Cascade (INC) models employed into general-purpose Monte-Carlo (MC) simulation codes such as PHITS are not always applicable in the energy region from typical upper limit of evaluated cross-section data (20 MeV) to several hundreds of MeV. In order to improve accuracy of the MC simulations including this energy region, JENDL-4.0 High Energy File (JENDL-4.0/HE), was released in 2015. It includes cross section data for incident neutrons up to 200 MeV for 130 nuclei, and a nuclear data library for incident protons up to 200 MeV for 133 nuclei. In order to use JENDL-4.0/HE in MC simulation codes, A Compact ENDF (ACE) -format library of all the neutron and proton incident data 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 proton data because the original NJOY converts laboratory angle-energy distribution form to continuum energy distribution form (LAW=61) automatically and PHITS can treat only angle-energy distribution form for proton. Benchmark calculations on shielding experiments at TIARA were carried out using PHITS to validate the ACE library of JENDL-4.0/HE.

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