Centers & Labs

RIKEN Nishina Center for Accelerator-Based Science

Nuclear Transmutation Data Research Group

Group Director: Hiroyoshi Sakurai (D.Sci.)

The disposal of high-level radioactive wastes from nuclear power plants is one of the most important issues at both national and international levels. As a fundamental solution to the problem, the establishment of nuclear transmutation technology where long-lived nuclides are changed to short-lived or stable ones will be vital. Progresses of R&D for the transmutation of long-lived fission products (LLFP) however, has been slow. Our group aims to obtain reaction data of LLFP at RIBF and other facilities, which may lead to a new discovery and invention for peaceful use of nuclear power and the welfare of humanity.

Main Research Field

Mathematical and physical sciences

Related Research Fields

Interdisciplinary science and engineering


  • Radioactive Isotope Beam
  • Exotic Nuclei
  • Gamma Spectroscopy
  • Heavy-ion induced Reactions

Selected Publications

  1. Wang H., Otsu H., Sakurai H., et al:
    "Spallation reaction study for the long-lived fission product Pd-107"
    Prog. Theo. Exp. Phys. 2017, 021D01 (2017)
  2. Wang H., Otsu H., Sakurai H., et al.:
    "Spallation reaction study for fission products in nuclear waste: Cross section measurements for Cs-137 and Sr-90 on proton and deuteron"
    Phys. Lett. B 754, 104-108 (2016)


Contact information

Nishina RIBF Bldg.,
2-1 Hirosawa,
Wako, Saitama
351-0198, Japan

Email: hsakurai [at]

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