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Fundamental study on defect structure derived from oxygen non-stoichiometry of nuclear fuel oxides

Research Project

Project/Area Number 23360431
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Nuclear engineering
Research InstitutionJapan Atomic Energy Agency

Principal Investigator

OSAKA Masahiko  独立行政法人日本原子力研究開発機構, 福島研究開発部門・大洗研究開発センター・福島燃料材料試験部, 主任研究員 (10421471)

Co-Investigator(Kenkyū-buntansha) TANAKA Kosuke  独立行政法人日本原子力研究開発機構, 福島研究開発部門・大洗研究開発センター・福島燃料材料試験部, 主任研究員 (20421779)
TAGUCHI Tomitsugu  独立行政法人日本原子力研究開発機構, 原子力科学研究部門・量子ビーム応用研究センター, 主任研究員 (50354832)
CHEN Ying  東北大学, 工学系研究院, 教授 (40372403)
SATO Isamu  独立行政法人日本原子力研究開発機構, 福島研究開発部門・大洗研究開発センター・福島燃料材料試験部, 副主任研究員 (80421783)
MIWA Shuhei  独立行政法人日本原子力研究開発機構, 福島研究開発部門・大洗研究開発センター・福島燃料材料試験部, 研究員 (50421780)
IGAWA Naoki  独立行政法人日本原子力研究開発機構, 原子力科学研究部門・量子ビーム応用研究センター, 主任研究員 (60354833)
Project Period (FY) 2011-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000)
Fiscal Year 2014: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2013: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2012: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2011: ¥10,530,000 (Direct Cost: ¥8,100,000、Indirect Cost: ¥2,430,000)
Keywords酸素不定比 / 酸素ポテンシャル / 欠陥構造 / 結晶構造解析 / 最大エントロピー法 / 化学熱力学法 / 第一原理計算 / 酸素イオンサイト / 酸化物燃料 / 熱力学モデル / 酸化物核燃料 / 中性子回折
Outline of Final Research Achievements

Investigation on defect structure of rare earth-doped Ce oxides (RDC) derived from oxygen non-stoichiometry was carried out. Modeling of oxygen potential, which is closely related with defect structure, was also done. It was revealed that oxygen ion distribution was changed according to oxygen non-stoichiometry. Chemical thermodynamic model for RDC oxygen potential was constructed incorporating effects of different REs.

Report

(5 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Annual Research Report
  • 2012 Annual Research Report
  • 2011 Annual Research Report
  • Research Products

    (4 results)

All 2015 2014 2013

All Presentation (4 results) (of which Invited: 2 results)

  • [Presentation] First-principles Modeling of Defects Behavior in Nuclear Fuels2015

    • Author(s)
      Ying Chen
    • Organizer
      Workshop in Shanghai Jiaotong University
    • Place of Presentation
      Shanghai Jiaotong University, China
    • Year and Date
      2015-03-09
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] First-principles study of some rare-earth oxides2014

    • Author(s)
      Ying Chen
    • Organizer
      Angstrom Workshop
    • Place of Presentation
      Uppsala University, Sweden
    • Year and Date
      2014-12-20
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] Crystal Structure and Electron Density Distribution Analyses of NdxCe1-xO2-δ for Electrolyte by Rietveld/ Maximum Entropy Method2014

    • Author(s)
      Tomitsugu Taguchi, Naoki Igawa, Shuhei Miwa, Atsushi Birumachi, Hidehito Asaoka, Masahiko Osaka
    • Organizer
      The 7th International Symposium on Surface Science
    • Place of Presentation
      Shimane, Japan
    • Year and Date
      2014-11-02 – 2014-11-06
    • Related Report
      2014 Annual Research Report
  • [Presentation] 核燃料模擬材料セリア固溶体の電子密度分布における添加物効果2013

    • Author(s)
      田口富嗣、三輪周平、井川直樹、美留町厚、山口憲司、逢坂正彦
    • Organizer
      日本セラミックス協会 第26回秋季シンポジウム
    • Place of Presentation
      信州大学
    • Related Report
      2013 Annual Research Report

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Published: 2011-04-06   Modified: 2019-07-29  

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