Centers & Labs

RIKEN Nishina Center for Accelerator-Based Science

Fast RI Data Team

Team Leader: Hideaki Otsu (D.Sci.)
Hideaki  Otsu(D.Sci.)

Nuclear reaction cross section data on Long-Lived Fission Products (LLFP) from nuclear reactor will be obtained by means of secondary beams from the BigRIPS fragment separator in RIBF. This team has charges of measurement of the deuteron and proton induced reaction on LLFP with inverse kinematics and also of determination of cross section of the neutron induced reaction on LLFP.
Same kind of projects which plan to measure variety of the reactions on LLFP are formed not only by the teams in RIKEN but groups from several institutes and universities.
This team also acts as the core and hub of the collaboration.

Main Research Field

Mathematical and physical sciences

Related Research Fields

Environmental science / Complex systems / Engineering


  • Long Lived Fission Product
  • Cross section measurement
  • Nuclear Data

Selected Publications

  1. H. Wang, H. Otsu, H. Sakurai et al. :
    "Spallation reaction study for the long-lived fission product 107Pd"
    Progress in Theory and Experiment Physics 2017,021D01 (2017).
  2. H. Wang, H. Otsu, H. Sakurai et al. :
    "Spallation reaction study for fission products in nuclear waste: Cross section measurements for 137Cs and 90Sr on proton and deuteron"
    Phys. Lett. B754, 104-108 (2016)

Lab Members

Principal Investigator

Hideaki Otsu
Team Leader

Core Members

Nobuyuki Chiga
Technical Staff I

Contact information

Nishina RIBF Building,
2-1 Hirosawa,
Wako, Saitama
351-0198, Japan
Tel: +81-(0)48-462-1319

Email: otsu [at]

Related links