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Study on isotope separation based on quantum diffusion

Research Project

Project/Area Number 15H02345
Research Category

Grant-in-Aid for Scientific Research (A)

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

Principal Investigator

Yokoyama Keiichi  国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門 原子力科学研究所 物質科学研究センター, グループリーダー (60354990)

Co-Investigator(Kenkyū-buntansha) 関口 哲弘  国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門 原子力科学研究所 物質科学研究センター, 研究主幹 (20373235)
黒崎 譲  国立研究開発法人量子科学技術研究開発機構, 高崎量子応用研究所 東海量子ビーム応用研究センター, 上席研究員(定常) (60370392)
永島 圭介  国立研究開発法人量子科学技術研究開発機構, 関西光科学研究所 光量子科学研究部, 上席研究員(定常) (60344438)
橋本 雅史  国立研究開発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, 研究員 (80354819)
矢板 毅  国立研究開発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, ディビジョン長 (40370481)
Project Period (FY) 2015-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥40,950,000 (Direct Cost: ¥31,500,000、Indirect Cost: ¥9,450,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2018: ¥6,760,000 (Direct Cost: ¥5,200,000、Indirect Cost: ¥1,560,000)
Fiscal Year 2017: ¥11,050,000 (Direct Cost: ¥8,500,000、Indirect Cost: ¥2,550,000)
Fiscal Year 2016: ¥10,400,000 (Direct Cost: ¥8,000,000、Indirect Cost: ¥2,400,000)
Fiscal Year 2015: ¥11,180,000 (Direct Cost: ¥8,600,000、Indirect Cost: ¥2,580,000)
Keywords量子ウォーク / 同位体分離 / セシウム / テラヘルツ波 / フラーレン / 有機非線形光学結晶 / C60薄膜 / セシウム原子 / トラジェクトリー計算 / 量子力学 / テラヘルツ / 有機結晶 / クロムレーザー / 最適制御理論 / 吸着エネルギー / XPS
Outline of Final Research Achievements

As a feasibility study of isotope separation of cesium using quantum diffusion phenomenon, recovery reactions and photo reactions of cesium-containing molecules were investigated. In the recovery-reaction study, C60 was found to be a good candidate of the getter material as a result of quantum chemistry calculation and synchlotron radiation X ray photoelectron spectroscopy. Then, rate constant of the isotope-scrambling reaction, which is important for designing recovery reaction system, was estimated quasi-quantitatively using quantum chemistry calculations and reaction trajectory calculations. In the photo reaction study, spectral intensity of the terahertz wave in the low-wave number region was measured accurately when the terahertz wave was generated with organic crystal OH1. This result indicates that even the present technology demonstration of isotope-selective rotational state distribution displacement is possible.

Academic Significance and Societal Importance of the Research Achievements

放射性廃棄物の処理処分やアクチノイド・ランタノイドなど希少金属の利用を考えるとき、現状では同位体を分別して処理あるいは利用することは想定していない。それはこれら重元素の同位体を分離する実用的手段がないからである。例えば放射性セシウムの核変換では分離係数が現状から3桁以上も飛躍する必要があり、簡単に技術開発が進むものではない。逆にそれが可能になれば核反応を本格的に利用する文明が訪れる可能性がある。本研究により得られた成果は単独でこの大きな出口に結びつくものではないが、量子拡散法が同位体分離技術のパラダイムシフトに繋がるかどうかを見極めるために積み重ねていくべき一つの結果といえる。

Report

(6 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • 2015 Annual Research Report
  • Research Products

    (35 results)

All 2020 2019 2018 2017 2016 2015

All Journal Article (9 results) (of which Peer Reviewed: 9 results,  Acknowledgement Compliant: 2 results,  Open Access: 1 results) Presentation (24 results) (of which Int'l Joint Research: 7 results,  Invited: 2 results) Book (2 results)

  • [Journal Article] An electron-capture efficiency in femtosecond filamentation2020

    • Author(s)
      Nakashima Nobuaki、Yatsuhashi Tomoyuki、Sakota Kenji、Iwakura Izumi、Hashimoto Sena、Yokoyama Keiichi、Matsuda Shohei
    • Journal Title

      Chemical Physics Letters

      Volume: 752 Pages: 137570

    • DOI

      10.1016/j.cplett.2020.137570

    • URL

      https://ocu-omu.repo.nii.ac.jp/records/2019723

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Quantum Optimal Control of Rovibrational Excitations of a Diatomic Alkali Halide: One-Photon vs. Two-Photon Processes2019

    • Author(s)
      Kurosaki Yuzuru、Yokoyama Keiichi
    • Journal Title

      Universe

      Volume: 5 Issue: 5 Pages: 109-109

    • DOI

      10.3390/universe5050109

    • Related Report
      2019 Annual Research Report 2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A quasiclassical trajectory calculation to compute the reaction cross section and thermal rate constant for the cesium exchange reaction 133CsI + 135Cs → 133Cs + I135Cs2019

    • Author(s)
      Kobayashi Takanori、Matsuoka Leo、Yokoyama Keiichi
    • Journal Title

      Computational and Theoretical Chemistry

      Volume: 1150 Pages: 40-48

    • DOI

      10.1016/j.comptc.2019.01.008

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Absorbent property of fullerene for cesium isotope separation investigated using X-ray photoelectron spectroscopy2018

    • Author(s)
      Sekiguchi Tetsuhiro、Yokoyama Keiichi、Uozumi Yuki、Yano Masahiro、Asaoka Hidehito、Suzuki Shinichi、Yaita Tsuyoshi
    • Journal Title

      Progress in Nuclear Science and Technology

      Volume: 5 Issue: 0 Pages: 161-164

    • DOI

      10.15669/pnst.5.161

    • ISSN
      2185-4823
    • Year and Date
      2018-11-01
    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Absorbent Property of Fullerene for Cesium Isotope Separation revealed using X-ray Photoelectron Spectroscopy2018

    • Author(s)
      Tetsuhiro Sekiguchi, Keiichi Yokoyama, Yuki Uozumi, Masahiro Yano, Hidehito Asaoka, Shinichi Suzuki, and Tsuyoshi Yaita
    • Journal Title

      Progress in Nuclear Science and Technology

      Volume: 印刷中

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A quasi-classical trajectory calculation for the cesium exchange reaction of CsI(v = 0, j = 0) + Cs → Cs+ICs2017

    • Author(s)
      Takanori Kobayashi, Leo Matsuoka, Keiichi Yokoyama
    • Journal Title

      Journal of Japan Institute of Energy

      Volume: 96 Pages: 441-444

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Quantum optimal control of the isotope-selective rovibrational excitation of diatomic molecules2017

    • Author(s)
      Kurosaki Yuzuru、Yokoyama Keiichi
    • Journal Title

      Chemical Physics

      Volume: 493 Pages: 183-193

    • DOI

      10.1016/j.chemphys.2017.07.003

    • NAID

      120006876727

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Theoretical study of the adsorption of Cs, Cs+, I, I-, and CsI on the C60 fullerene2016

    • Author(s)
      T. Kobayashi, K. Yokoyama
    • Journal Title

      J. Nucl. Sci. Tech.

      Volume: 印刷中 Issue: 10 Pages: 1489-1493

    • DOI

      10.1080/00223131.2015.1126206

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Theoretical study of the Cs isotope exchange reaction of CsI + Cs' --> Cs + Cs'I2015

    • Author(s)
      T. Kobayashi, M. Hashimoto, K. Yokoyama
    • Journal Title

      JAEA-Research

      Volume: 2015-014 Pages: 1-7

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Presentation] 二原子分子の振動回転励起の量子制御:一光子および二光子過程の役割2019

    • Author(s)
      黒崎譲、横山啓一
    • Organizer
      分子科学討論会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Eu(III)の f-f 遷移を介する多光子励起による光還元のフルエンス依存性2019

    • Author(s)
      松田晶平、中島信昭、横山啓一他4名
    • Organizer
      光化学討論会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 光電子分光法を用いた深さ分析による C60炭素固体内部へのCs吸蔵拡散2019

    • Author(s)
      関口哲弘、横山啓一他4名
    • Organizer
      放射光科学討論会
    • Related Report
      2019 Annual Research Report
  • [Presentation] OH1を用いたテラヘルツ波発生直後の波形計測2019

    • Author(s)
      横山啓一、松田晶平
    • Organizer
      第66回応用物理学会春季学術講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 同位体分離実証用光源の開発状況について2019

    • Author(s)
      横山啓一
    • Organizer
      Workshop on quantum walks at SPring-8
    • Related Report
      2018 Annual Research Report
  • [Presentation] アルコール溶液中での多光子励起による Eu3+の光還元反応2018

    • Author(s)
      松田晶平、中島信昭、横山啓一、八ッ橋知幸、Haik Chosrowjan、谷口誠治、染川智弘
    • Organizer
      2018年光化学討論会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 二光子過程を含む同位体選択的振動回転励起の量子制御2018

    • Author(s)
      黒崎譲、横山啓一
    • Organizer
      第12回分子科学討論会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 二原子分子の同位体選択的振動回転励起の量子最適制御2018

    • Author(s)
      黒崎譲、横山啓一
    • Organizer
      レーザー学会学術講演会第 38 回年次大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 光電子分光法によるCs-135同位体分離回収 のためのC60フラーレン吸蔵材料の評価2018

    • Author(s)
      関口哲弘, 横山啓一, 魚住雄輝, 矢野雅大, 朝岡秀人, 鈴木伸一, 矢板 毅
    • Organizer
      第31回日本放射光学会年会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Laser chemistry for Eu recovery2018

    • Author(s)
      Nobuaki Nakashima,Tomoyuki Yatsuhashi,Kenji Sakota,Izumi Iwakura,Keiichi Yokoyama
    • Organizer
      日本化学会第98春季年会(2018)
    • Related Report
      2017 Annual Research Report
  • [Presentation] Evaluation of C60 Thin Film as Selective Absorbent for Cesium Isotope Separation using X-ray Photoelectron Spectroscopy2017

    • Author(s)
      T. Sekiguchi, K. Yokoyama, Y. Uozumi, H. Asaoka, M. Yano, T. Yaita
    • Organizer
      Symposium on Surface Science and Nanotechnology
    • Place of Presentation
      京都市国際交流会館(京都府・京都市)
    • Year and Date
      2017-01-24
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Depth Concentration Profile of Cesium in Fullerene Absorbent Studied by Synchrotron X-Ray Photoelectron Spectroscopy2017

    • Author(s)
      Tetsuhiro Sekiguchi, Keiichi Yokoyama, Yuki Uozumi, Masahiro Yano, Hidehito Asaoka, Shinichi Suzuki, and Tsuyoshi Yaita
    • Organizer
      The 8-th international symposium on surface science
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 量子ウォークとレーザー同位体分離2017

    • Author(s)
      横山啓一
    • Organizer
      九州大学マス・フォア・インダストリ研究所公開講演会
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] 放射性セシウムの同位体分離技術開発にむけて2017

    • Author(s)
      横山啓一
    • Organizer
      広島大学大学院理学研究科公開講演会
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] Quantum optimal control of isotope-selective rovibrational excitation of diatomic molecules2017

    • Author(s)
      Yuzuru Kurosaki, Keiichi Yokoyama
    • Organizer
      第11回分子科学討論会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Absorbent Property of Fullerene for Cesium Isotope Separation revealed using X-ray Photoelectron Spectroscopy2017

    • Author(s)
      Tetsuhiro Sekiguchi, Keiichi Yokoyama, Yuki Uozumi, Masahiro Yano, Hidehito Asaoka, Shinichi Suzuki, and Tsuyoshi Yaita
    • Organizer
      Actinide2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Concept of Laser-assisted Separation and Recovery for f-electron elements2017

    • Author(s)
      Keiichi Yokoyama, Nobuaki Nakashima, Tsuyoshi Yaita
    • Organizer
      Actinide2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] A quasi-classical trajectory calculation for the cesium exchange reaction of CsI(v = 0, j = 0) + Cs → Cs+ICs2016

    • Author(s)
      Takanori Kobayashi, Leo Matsuoka, Keiichi Yokoyama
    • Organizer
      The 5th Joint Conference on Renewable Energy and Nanotechnology
    • Place of Presentation
      Kuala Lumpur, Malaysia
    • Year and Date
      2016-12-07
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 分子回転の光励起と量子ウォーク2016

    • Author(s)
      横山啓一
    • Organizer
      数学協働プログラム ワークショップ「量子系の数理と物質制御への展開II」
    • Place of Presentation
      横浜国立大学(神奈川県・横浜市)
    • Year and Date
      2016-10-20
    • Related Report
      2016 Annual Research Report
  • [Presentation] 異性化反応の量子制御における分子回転の効果2016

    • Author(s)
      黒崎譲, Tak-San Ho, Herschel Rabitz
    • Organizer
      第10回分子科学討論会
    • Place of Presentation
      神戸ファッションマート(兵庫県・神戸市)
    • Year and Date
      2016-09-13
    • Related Report
      2016 Annual Research Report
  • [Presentation] Nonlinear optical response of molecules rotationally excited by impulsive Raman scattering2016

    • Author(s)
      Keiichi Yokoyama, Takanori Kobayashi
    • Organizer
      32nd Symposium on Chemical Kinetics and Dynamics
    • Place of Presentation
      大宮ソニックシティ(埼玉県・大宮市)
    • Year and Date
      2016-06-01
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] An Industrial application of quantum walk; Isotope separation of radioactive waste2015

    • Author(s)
      K. Yokoyama
    • Organizer
      Workshop of Quantum Simulation and Quantum Walks 2015
    • Place of Presentation
      横浜国立大学(神奈川県・横浜市)
    • Year and Date
      2015-11-16
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 同位体選択的振動回転励起の量子制御2015

    • Author(s)
      黒崎 謙、横山啓一
    • Organizer
      第9回分子科学討論会
    • Place of Presentation
      東京工業大学(東京都・目黒区)
    • Year and Date
      2015-09-16
    • Related Report
      2015 Annual Research Report
  • [Presentation] C60フラーレンのセシウム吸着材としての可能性の理論計算2015

    • Author(s)
      小林孝徳、横山啓一
    • Organizer
      第18回理論化学討論会
    • Place of Presentation
      大阪大学(大阪府・豊中市)
    • Year and Date
      2015-05-20
    • Related Report
      2015 Annual Research Report
  • [Book] 量子ウォークの新展開第12章2019

    • Author(s)
      横山啓一、松岡雷士
    • Total Pages
      14
    • Publisher
      培風館
    • ISBN
      9784563011628
    • Related Report
      2019 Annual Research Report
  • [Book] NSAコメンタリーシリーズNo.22 「放射性廃棄物減容化・有 害度低減の技術開発 -- 核種分離・転換」第5章第2節2016

    • Author(s)
      横山啓一
    • Total Pages
      12
    • Publisher
      原子力システム研究懇話会
    • Related Report
      2015 Annual Research Report

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Published: 2015-04-16   Modified: 2022-11-04  

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