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2022 Fiscal Year Annual Research Report

A study on the synergetic effect of electronic excitation/dislocation damage by in-situ measurement method under irradiation

Research Project

Project/Area Number 21J13575
Research InstitutionKyushu University

Principal Investigator

SEO POOREUN  九州大学, 工学府, 特別研究員(DC2)

Project Period (FY) 2021-04-28 – 2023-03-31
KeywordsCeramic oxides / Irradiation / Point defect / HVEM / Radiation damage / Nuclear material / Cathodoluminescence
Outline of Annual Research Achievements

Gd2O3 doped CeO2 (GDC)is a fluorite sturcture which is a radiation-resistant oxides. This oxide can be a substitute of the nuclear fuel, such as (U,Gd)O2.GDC has nature oxygen vacancies (VOs) generated by reduction of CeO2-x or substitution of Gd3+ ion to Ce4+ ion site, resulting in a cooperative impact that aids in the restoration of radiation damage.The GDC is examined by varying Gd dopant concentration, and they were exposed to heavy ions at high ion fluences to determine the impact of VOs and its stuructue evaluation.To assess the extent of disordering caused by these factors, both virgin and irradiated samples were analyzed on long- and medium-range scales, and images of the affected areas were examined using TEM.In-situ cathodoluminescence spectroscopy under high-energy electron irradiation were also analyzed to determine the charge states of VOs in the beam condition.

Research Progress Status

令和4年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和4年度が最終年度であるため、記入しない。

  • Research Products

    (3 results)

All 2022

All Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results) Presentation (1 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] In-situ cathodoluminescence and microstructure of oxygen deficient Gd2O3 doped CeO22022

    • Author(s)
      Seo Pooreun, Costantini Jean-Marc, Matsumura Syo, Yasuda Kazuhiro
    • Journal Title

      超顕微解析研究センター報告

      Volume: 46 Pages: 1 ~ 2

  • [Journal Article] Microstructure evolution in 200-MeV Xe ion irradiated CeO2 doped with Gd2O32022

    • Author(s)
      Seo Pooreun、Yasuda Kazuhiro、Matsumura Syo、Ishikawa Norito、Gutierrez Gaelle、Costantini Jean-Marc
    • Journal Title

      Journal of Applied Physics

      Volume: 132 Pages: 235902~235902

    • DOI

      10.1063/5.0121951

    • Peer Reviewed / Int'l Joint Research
  • [Presentation] In-situ Cathodoluminescence in Gadolinia Doped Ceria under High Energy Electron2022

    • Author(s)
      Seo Pooreun, Costantini Jean-Marc, Matsumura Syo, Yasuda Kazuhiro
    • Organizer
      Material Research Society Spring 2022
    • Int'l Joint Research

URL: 

Published: 2023-12-25  

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