Laser-induced plasma spectroscopy of solidified cesium: toward application for isotope separation engineering

• Project/Area Number: 26820407
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Nuclear engineering
• Research Institution: Hiroshima University
• Principal Investigator: MATSUOKA Leo 広島大学, 工学(系)研究科(研究院), 助教 (50455276)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2014: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
• Keywords: 放射性セシウム / レーザー同位体分離 / 飽和吸収分光 / LIBS / 半導体レーザー / 速度交換衝突 / 光誘起ドリフト / 同位体分析

Outline of Final Research Achievements

Highly efficient isotope separation technology is required for annihilation disposal of radioactive cesium by nuclear transmutation. From the viewpoint to accelerate researches for laser isotope separation and its irreversible collection processes, we developed fundamental technologies with a focus on Doppler-free laser spectroscopy for plasmas. In the course of the research for laser absorption spectroscopy under high pressure, we also found new isotope separation scheme for radioactive cesium which is superior to previous suggestions for realization.

Research Products

• [Presentation] Numerical study on isotope separation of radioactive cesium by light-induced drift (2016)
  • Author(s): Kenta Yuki, Leo Matsuoka, Shinichi Namba
  • Organizer: Optical Manipulation Conference’16
  • Place of Presentation: パシフィコ横浜（横浜）
  • Year and Date: 2016-05-18
  • Int'l Joint Research
• [Presentation] 螺旋状発光分布を有する アルゴンアークジェットプラズマの レーザー吸収分光 (2016)
  • Author(s): 松岡 雷士
  • Organizer: 日本物理学会第71回年次大会
  • Place of Presentation: 東北学院大学（仙台）
  • Year and Date: 2016-03-19
  • Invited
• [Presentation] Collisional Effects in Saturated Absorption Spectroscopy of Argon Arcjet Plasma (2015)
  • Author(s): Leo Matsuoka, Kenta Yuki, Yutaro Sonoyama, Wataru Sasano, Shinichi Namba
  • Organizer: APSPT-9/SPSM-28
  • Place of Presentation: 長崎大学（長崎）
  • Year and Date: 2015-12-12
  • Int'l Joint Research
• [Presentation] アルゴンアークジェットプラズマの衝撃波構造測定のための レーザー吸収分光システムの開発 (2015)
  • Author(s): 松岡 雷士, 梢 和樹, 溝口 亮, 難波 愼一
  • Organizer: 電気学会・プラズマ放電パルスパワー合同研究会
  • Place of Presentation: 北海道大学（札幌）
  • Year and Date: 2015-06-04
• [Presentation] アルゴンアークジェットプラズマの速度分布計測のための レーザー吸収分光システムの開発 (2014)
  • Author(s): 溝口 亮、松岡雷士、難波愼一
  • Organizer: Plasma Conference 2014
  • Place of Presentation: 朱鷺メッセ（新潟県新潟市）
  • Year and Date: 2014-11-18 – 2014-11-21