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RIKEN Center for Advanced Photonics Neutron Beam Technology Team

Team Leader: Yoshie Otake (D.Sci.)

Research Summary

Yoshie  Otake(D.Sci.)

RIKEN has developed accelerator-driven compact pulse neutron systems for practical use of industrial applications and infrastructure non-destructive inspection with the names of RANS (RIKEN Accelerator-driven compact neutron source). RANS has succeeded to develop non-destructive inspection methods with slow and fast neutrons. One is the visualization method of the corrosion and its related water movement of painted steels and the analytical method of the quantitative estimation of the water movement in the painted steels, the other is the neutron engineering diffractometer for the texture evaluation and the austenite volume fraction estimation of iron and steel. The others are the fast neutron imaging applications.

Main Research Fields

  • Interdisciplinary Science & Engineering

Related Research Fields

  • Complex Systems
  • Engineering


  • Accelerator-based compact neutron system
  • Non-destructive inspection system
  • Texture evaluation observation
  • Research and development of non-destructive inspection for infrastructures
  • Detection of salt damage in the concrete by prompt-gamma neutron activation analysis

Selected Publications

  • 1. Y. Wakabayashi, Y. Yoshimura, M. Mizuta, Y.I keda, and Y.Otake.:
    "Feasibility Study of Nondestructive Diagnostic Method for Chlorine in Concrete by Compact Neutron Source and PGA"
    Journal of Advanced Concrete Technology Volume 17, No.10, pp.571-578 (2019)
  • 2. S. Ikeda, Y. Otake, T. Kobayashi, and N. Hayashizaki.:
    "Design of 500MHz RFQ linear accelerator for a compact neutron source,RANS-III"
    Nuclear Inst. and Methods in Physics Research B 461 186–190 (2019)
  • 3. Y. Wakabayashi, A.Taketani, T. Hashiguchi, Yo.Ikeda, To.Kobayashi, Sheng Wang, Mingfei Yan, M. Harada, Y. Ikeda and Y. Otake.:
    "A function to provide neutron spectrum produced from the 9Be + p reaction with protons of energy below 12 MeV[J]."
    Journal of Nuclear Science and Technology Vol. 55 pp.859-867 (2018)
  • 4. Y. OTAKE.:
    "RIKEN Compact Neutron Systems with Fast and Slow Neutrons"
    Plasma and Fusion Research Vol.13 pp.2401017-1-4 (2018)
  • 5. Y.Ikeda, M.Takamura, T.Hakoyama, Y.Otake, M.Kumagai, H. Suzuki.:
    "Development of On-site measurement Technique of Retained Austenite Volume Fraction by Compact nNeutron Source RANS"
    Tetsu to Hagane vol.104, No.3 pp.18-24 (2018)
  • 6. Y. Otake, Y. Seki, Y. Wakabayashi, Yo. Ikeda, T. Hashiguchi, Y. Yoshimura, H. Sunaga, A. Taketani, M. Mizuta, Y. Oshima, and M.Ishida.:
    "Research and Development of a Non-destructive Inspection Technique with a Compact Neutron Source"
    Journal of Disaster Research Vol.12, No.3 pp.585-592 (2017)
  • 7. Yo. Ikeda, Y. OTAKE, and M.Mizuta.:
    "Nondestructive Measurement Method to Detect Water/Void inside Slabs using Compact Neutron Source by Backscattered Neutrons"
    Journal of Advanced Concrete Technology Vol.15 No.10 pp.603-609 (2017)
  • 8. Y. Ikeda, M. Takamura, A. Taketani, H. Sunaga, Y. Otake, H. Suzuki, M. Kumagai, Y. Oba.:
    "Prospect for application of compact accelerator-based neutron source to neutron engineering diffraction"
    Nucl. Instr. Meth. A 833 pp 61-67 (2016)

Recent Research Results

Related Links

Lab Members

Principal investigator

Yoshie Otake
Team Leader

Core members

Atsushi Taketani
Deputy Team Leader
Masato Takamura
Senior Scientist
Tomohiro Kobayashi
Senior Research Scientist
Yasuo Wakabayashi
Research Scientist
Maki Mizuta
Research Scientist
Takaoki Takanashi
Research Scientist
Chihiro Iwamoto
Research Scientist
Kunihiro Fujita
Research Scientist
Shota Ikeda
Postdoctoral Researcher
Makoto Goto
Technical Staff II
Yoshio Matsuzaki
Technical Staff II
Haruhiko Hashikura
Technical Staff II
Mingfei Yan
Visiting Researcher
Baolong Ma
International Program Associate

Contact Information

Neutron Application Facilities,
2-1 Hirosawa, Wako, Saitama 351-0198, Japan
Email: yotake [at] riken.jp