Japanese Evaluated Nuclear Data Library Version 3 Revision-3: JENDL-3.3

• Published in: Journal of nuclear science and technology 2002-11, Vol.39 (11), p.1125
• Main Authors: SHIBATA, Keiichi, KAWANO, Toshihiko, NAKAGAWA, Tsuneo, IWAMOTO, Osamu, KATAKURA, Jun-ichi, FUKAHORI, Tokio, CHIBA, Satoshi, HASEGAWA, Akira, MURATA, Toru, MATSUNOBU, Hiroyuki, OHSAWA, Takaaki, NAKAJIMA, Yutaka, YOSHIDA, Tadashi, ZUKERAN, Atsushi, KAWAI, Masayoshi, BABA, Mamoru, ISHIKAWA, Makoto, ASAMI, Tetsuo, WATANABE, Takashi, WATANABE, Yukinobu, IGASHIRA, Masayuki, YAMAMURO, Nobuhiro, KITAZAWA, Hideo, YAMANO, Naoki, TAKANO, Hideki
• Format: Article
• Language: English
• ISSN: 0022-3131; 1881-1248
• DOI: 10.3327/jnst.39.1125

Evaluation for JENDL-3.3 has been performed by considering the accumulated feedback information and various benchmark tests of the previous library JENDL-3.2. The major problems of the JENDL-3.2 data were solved by the new library: overestimation of criticality values for thermal fission reactors was improved by the modifications of fission cross sections and fission neutron spectra for 235U; incorrect energy distributions of secondary neutrons from important heavy nuclides were replaced with statistical model calculations; the inconsistency between elemental and isotopic evaluations was removed for medium-heavy nuclides. Moreover, covariance data were provided for 20 nuclides. The reliability of JENDL-3.3 was investigated by the benchmark analyses on reactor and shielding performances. The results of the analyses indicate that JENDL-3.3 predicts various reactor and shielding characteristics better than JENDL-3.2.