JENDL/ImPACT-2018: a new nuclear data library for innovative studies on transmutation of long-lived fission products

Satoshi Kunieda, Naoya Furutachi, Futoshi Minato, Nobuyuki Iwamoto, Osamu Iwamoto, Shinsuke Nakayama, Shuichiro Ebata, Toru Yoshida, Kenji Nishihara, Yukinobu Watanabe, Koji Niita

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


A new nuclear data library, JENDL/ImPACT-2018, was developed for an innovative study on the transmutation of long-lived fission products. Nuclear reaction cross-sections were newly evaluated for incident neutrons and protons up to 200 MeV for 163 nuclides focusing on long-lived nuclei such as 79Se, 93Zr, 107Pd and 135Cs, adopting some parts of JENDL-4.0. Our challenge was an evaluation of cross-sections for a number of unstable nuclei over a wide energy range where the experimental data were very scarce. We estimated cross-sections based on a nuclear model code CCONE by incorporating an advanced knowledge on the nuclear structure theory and a model-parameterization based on new experimental cross-sections measured by the inverse kinematics. Through comparisons with available experimental data on the stable isotopes, it is found that the present data give better agreements with them than those in the existing libraries. In a neutronics simulation by the PHITS code, we also found that the largest impact of the present library was seen on the estimated amount of isotope productions.

Original languageEnglish
Pages (from-to)1073-1091
Number of pages19
Journaljournal of nuclear science and technology
Issue number12
Publication statusPublished - Dec 2 2019

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering


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