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Theoretical study of the physical mechanism of isotope effects in deuterium negative ion sources

Research Project

Project/Area Number 19K03783
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 14010:Fundamental plasma-related
Research InstitutionNaruto University of Education

Principal Investigator

Kenji Miyamoto  鳴門教育大学, 大学院学校教育研究科, 教授 (00532996)

Co-Investigator(Kenkyū-buntansha) 畑山 明聖  慶應義塾大学, 理工学部(矢上), 名誉教授 (10245607)
星野 一生  慶應義塾大学, 理工学部(矢上), 准教授 (50513222)
Project Period (FY) 2019-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywordsプラズマ / 核融合 / 加速器 / 重水素 / 負イオン源 / 数値シミュレーション / PIC法 / モンテカルロ法 / 負イオン / 同位体効果
Outline of Research at the Start

本研究は重水素負イオン源について、運動論的粒子モデルに基づく数値計算シミュレーションにより、負イオン源のドライバー領域から引出・加速部までを総括的にモデリングし、「研究の目的」に挙げた同位体効果と呼ばれる水素の場合と異なる物理特性のメカニズムを解明することが目的である。そして得られた知見により、核融合や医療用加速器等において、研究開発が進められている重水素負イオン源の実現に貢献する。

Outline of Final Research Achievements

In this study, the cause of the increase in electron current, which is one of the isotope effects in a deuterium negative ion source, was investigated using both an analysis with a zero-dimensional model that takes into account the atomic and molecular collision processes between hydrogen and deuterium, and a numerical simulation for electron transport analysis (KEIO-MARC code).
First, for the zero-dimensional model, the results shows that the plasma density is approximately 1.7 times higher for deuterium due to differences in the effective reaction rate coefficients for ionization of hydrogen and deuterium and the transport loss time constant of positive ions. Similar results are also obtained with the KEIO-MARC code. From the above, it is made clear that the increase in electron current due to deuteration is caused by differences in the effective reaction rate coefficients for ionization and the effective confinement time of positive ions.

Academic Significance and Societal Importance of the Research Achievements

本研究を通して得られた知見は、世界の次世代エネルギーとして有望である核融合発電の実現へ貢献できると期待される。さらに、次世代のがん治療法であるBNCT等で用いられる医療用加速器の開発への貢献が期待できる。
また本研究では、負イオン源に形成されるイオン性プラズマの界面構造、荷電粒子の輸送過程、電磁場応答性等の解析を行う。そのため学術的には、非相対論に限られるが、宇宙の電子・陽電子プラズマの静電波動の伝搬や輸送過程の理解に大きな進展をもたらすと期待される。すなわち実験室プラズマ研究から宇宙プラズマ研究への新たな貢献という観点から、プラズマ物理の新領域の開拓が期待される。

Report

(6 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (35 results)

All 2024 2023 2022 2021 2020 2019 Other

All Int'l Joint Research (3 results) Journal Article (10 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 9 results,  Open Access: 5 results) Presentation (22 results) (of which Int'l Joint Research: 13 results,  Invited: 1 results)

  • [Int'l Joint Research] セルン研究所(スイス)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] CERN研究所(スイス)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] CERN研究所(スイス)

    • Related Report
      2019 Research-status Report
  • [Journal Article] Numerical study of the plasma meniscus shape and beam optics in RF negative ion sources2024

    • Author(s)
      K. Hayashi, K. Hoshino, K. Miyamoto, A. Hatayama and J. Lettry
    • Journal Title

      Journal of Instrumentation

      Volume: 19 Issue: 04 Pages: C04031-C04031

    • DOI

      10.1088/1748-0221/19/04/c04031

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Effect of Surface Produced H<sup>- </sup>Ion on the Plasma Meniscus in Negative Hydrogen Ion Sources2023

    • Author(s)
      Katsuya HAYASHI, Kazuo HOSHINO, Akiyoshi HATAYAMA, Kenji MIYAMOTO, Jacques LETTRY
    • Journal Title

      Plasma and Fusion Research

      Volume: 18 Issue: 0 Pages: 1401008-1401008

    • DOI

      10.1585/pfr.18.1401008

    • ISSN
      1880-6821
    • Year and Date
      2023-03-03
    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Study of plasma meniscus including surface produce negative ions by using PIC-MCC simulation2023

    • Author(s)
      K. Miyamoto, K. Hayashi, K. Hoshino and A. Hatayama
    • Journal Title

      Journal of Instrumentation

      Volume: 18 Issue: 06 Pages: C06014-C06014

    • DOI

      10.1088/1748-0221/18/06/c06014

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Analysis of the plasma meniscus in a hydrogen electronegative plasma2022

    • Author(s)
      Kenji Miyamoto, Katuya Hayashi, Kazuo Hoshino, and Akiyoshi Hatayama
    • Journal Title

      Plasma Sources Science and Technology

      Volume: 31 Issue: 10 Pages: 10512-10512

    • DOI

      10.1088/1361-6595/ac9254

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Study of negative ion beam emittance characteristic using 3D PIC-MCC simulation2022

    • Author(s)
      K. Miyamoto, K. Nagaoka, A. Hatayama, K. Hoshino, H. Nakano, T.Shibata, K. Tsumori
    • Journal Title

      Journal of Physics: Conference Series

      Volume: 2244 Issue: 1 Pages: 012040-012040

    • DOI

      10.1088/1742-6596/2244/1/012040

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Numerical analysis of isotope effect in NIFS negative ion source2022

    • Author(s)
      Ryo Kato, Kazuo Hoshino, Haruhisa Nakano, Takanori Shibata, Kenji Miyamoto, Kengo Iwanaka, Katsuya Hayashi, Akiyoshi Hatayama
    • Journal Title

      Journal of Physics: Conference Series

      Volume: 2244 Issue: 1 Pages: 012035-012035

    • DOI

      10.1088/1742-6596/2244/1/012035

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Numerical study of different electron density observed in Hydrogen and Deuterium ion source plasmas2022

    • Author(s)
      T Shibata, R Kato, H Nakano, K Hayashi, J Sato, K Miyamoto,K Hoshino, and A Hatayama
    • Journal Title

      Journal of Physics: Conference Series

      Volume: 2244 Issue: 1 Pages: 012002-012002

    • DOI

      10.1088/1742-6596/2244/1/012002

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] イオン源の数値シミュレーション技術の進展と応用2021

    • Author(s)
      柴田崇統、吉田雅史、澤田圭司、星野一生、和田元、剣持貴弘、宮本賢治、畑山明聖
    • Journal Title

      プラズマ・核融合学会誌

      Volume: 97 Pages: 568-596

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effects of the extraction voltage on the beam divergence for a H? ion source2019

    • Author(s)
      Lindqvist M.、Nishioka S.、Miyamoto K.、Hoshino K.、Lettry J.、Hatayama A.
    • Journal Title

      Journal of Applied Physics

      Volume: 126 Issue: 12 Pages: 123303-123303

    • DOI

      10.1063/1.5116413

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] 負イオンは一日にして成らず~負イオン研究の進展と広がり~2019

    • Author(s)
      池田勝則、宮本賢治、小栗英知、柏木美恵子
    • Journal Title

      Journal of Plasma and Fusion Research

      Volume: 95 Pages: 327-349

    • Related Report
      2019 Research-status Report
    • Open Access
  • [Presentation] Simple 3D PIC Analysis for Beam Phase Space Oscillation in RF Driven Negative Hydrogen Ion Source2023

    • Author(s)
      Takanori Shibata, Katsuhiro Shinto, Haruhisa Nakan, Kazuo Hoshino, Kenji Miyamoto, Kiyonori Ohkoshi, Kesao Nanmo, Kiyoshi Ikegami, Isao Kawai, Hidetomo Oguri, Motoi Wada
    • Organizer
      20th International Conference on Ion Sources
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Numerical Analysis of Isotope Effects of Vibrationally Excited Molecule in Negative Ion Source2023

    • Author(s)
      Kengo Iwanaga, Kazuo Hoshino, Haruhisa Nakano, Takanori Shibata, Kenji Miyamoto
    • Organizer
      20th International Conference on Ion Sources
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Effect of the Oscillation of Upstream Plasma Density on Plasma Meniscus in RF Negative Ion Sources2023

    • Author(s)
      Katsuya Hayashi, Kazuo Hoshino, Akiyoshi Hatayama, Kenji Miyamoto
    • Organizer
      20th International Conference on Ion Sources
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 負イオンシース境界の硬さ2023

    • Author(s)
      永岡賢一、濱嶋大河、津守克嘉、中野治久、長壁正樹、波場泰昭、高橋和貴、宮本賢治、W. Kraus, U. Fantz, E. Rattanawongnara
    • Organizer
      日本物理学会 第78回年次大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 負イオン源におけるプラズマメニスカスとビーム収束性の3次元シミュレーション解析2023

    • Author(s)
      宮本賢治、林克哉、星野一生、畑山明聖
    • Organizer
      第40回 プラズマ・核融合学会年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Study of plasma meniscus including the surface produced negative ions by using PIC-MCC simulation2022

    • Author(s)
      K. Miyamoto, K. Hayashi, K. Hoshino, A. Hatayama
    • Organizer
      8th International symposium on Negative Ions, Beams and Sources
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Numerical study of the plasma meniscus shape and beam optics in RF negative ion sources2022

    • Author(s)
      Katsuya Hayash, Kazuo Hoshino, Kenji Miyamoto, Akiyoshi Hatayama, Jacques Lettry
    • Organizer
      8th International symposium on Negative Ions, Beams and Sources
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] NIFS負イオン源におけるプラズマ輸送過程の評価2022

    • Author(s)
      岩中健悟、塩谷岳大、星野一生、中野治久、柴田崇統、宮本賢治
    • Organizer
      第39回 プラズマ・核融合学会 年会
    • Related Report
      2022 Research-status Report
  • [Presentation] Study of negative ion beam emittance characteristic using 3D PIC-MCC simulation2021

    • Author(s)
      K. Miyamoto, K. Nagaoka, K. Tsumori, A. Hatayama, K. Hoshino, K. Hayashi, M. Kisaki, H. Nakano, K. Ikeda, Y. Fujiwara, and M. Osakabe
    • Organizer
      The 19th International Conference on Ion Sources
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Numerical analysis of isotope effect in NIFS negative ion source2021

    • Author(s)
      R. Kato, K. Hoshino, H. Nakano, T. Shibata, K. Miyamoto, K. Iwanaka, K. Hayashi, A. Hatayama
    • Organizer
      The 19th International Conference on Ion Sources
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Numerical study of different electron density observed in Hydrogen and Deuterium ion source plasmas2021

    • Author(s)
      T. Shibata, R. Kato, H. Nakano, K. Hayashi, J. Sato, K. Miyamoto, K. Hoshino and A. Hatayama
    • Organizer
      The 19th International Conference on Ion Sources
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Effect of Electro-Negativity on Beam Extraction in Negative Hydrogen Ion Sources2021

    • Author(s)
      K. Hayashi, K. Hoshino, K. Miyamoto, A. Hatayama
    • Organizer
      The 19th International Conference on Ion Sources
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Effect of RF electric field on beam focusing in negative ion source plasma2021

    • Author(s)
      T. Hamajima, R. Nakamoto, Y.Haba, K. Tsumori, M.Osakabe, H.Nakano, K.Ikeda, S.Yoshimura, K.Miyamoto, K.Takahashi, S.Masaki, E.Rattanawongnara, K.Nagaoka
    • Organizer
      The 30th International Toki Conference
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Effect of RF electric field on beam focusing in negative ion source plasma2021

    • Author(s)
      Ryoya Nakamoto, Katsuyosi Tsumori, Masaki Osakabe, Haruhisa Nakano, Katsunori Ikeda, Shinji Yoshimura, Masasi Kisaki, Kenji Miyamoto, Kazunori Takahashi, Shingo Masaki, Rattanawongnara Engrhyt, Kenichi Nagaoka
    • Organizer
      The 19th International Conference on Ion Sources
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 負イオン源プラズマ中におけるRF電場のビーム集束性に対する影響2021

    • Author(s)
      濱嶋大河、中本崚也、津守克嘉、長壁正樹、中野治久、藤原大、池田勝則、吉村信次、木崎雅志、宮本賢治、高橋和貴、正木伸吾、Engrhyt Rattanawongnara、永岡賢一
    • Organizer
      一般社団法人 日本物理学会 2021年秋季大会
    • Related Report
      2021 Research-status Report
  • [Presentation] Different characteristics of plasma meniscus formation between positive and negative beam extractions2020

    • Author(s)
      K. Nagaoka, Y. Haba, M. Kisaki, K. Takahashi, A. Ando, J. Slief, R. Nakamoto, H. Nakano, K. Tsumori, K. Ikeda, K. Miyamoto, Y. Fujiwara, S. Masaki, E. Rattanawongnara, M. Osakabe
    • Organizer
      The 7th International Symposium on Negative Ions, Beams and Sources
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] PICシミュレーションによる負イオンビームのエミッタンス特性の研究2020

    • Author(s)
      宮本賢治、永岡賢一、津守克嘉、畑山明聖、星野一生、林克哉、木崎雅志、中野治久、池田勝則、藤原大、長壁正樹
    • Organizer
      第37回プラズマ・核融合学会年会
    • Related Report
      2020 Research-status Report
  • [Presentation] NIFS重水素負イオン源における電子輸送の数値解析2020

    • Author(s)
      加藤凌、佐藤捷、中野治久、柴田崇統、宮本賢治、畑山明聖、星野一生
    • Organizer
      第37回プラズマ・核融合学会年会
    • Related Report
      2020 Research-status Report
  • [Presentation] 負イオンビーム集束性に関する考察2020

    • Author(s)
      永岡賢一、波場泰昭、木崎雅志、中本崚也、津守克嘉、中野治久、宮本賢治、高橋和貴、池田勝則、藤原大、長壁正樹
    • Organizer
      日本物理学会第75回年次大会(2020)
    • Related Report
      2020 Research-status Report
  • [Presentation] 負イオンビーム集束性に関する考察2020

    • Author(s)
      永岡賢一、波場泰昭、木崎雅志、中本崚也 、津守克嘉 、中野治久、宮本賢治、高橋和貴 池田勝則、藤原大、長壁正樹
    • Organizer
      一般社団法人 日本物理学会 第75回年次大会(2020年)
    • Related Report
      2019 Research-status Report
  • [Presentation] Optical characteristics of negative ion beam with multi-beam-axes produced by LHD-type negative ion source2019

    • Author(s)
      Kenichi Nagaoka, Yasuaki Haba, Katsuyoshi Tsumori,Masashi Kisaki, Haruhisa Nakano, Katsunori Ikeda, Shingo Masaki, Kenji Miyamoto, Kazunori Takahashi and Masaki Osakabe
    • Organizer
      The 18th International Conference on Ion Sources
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 医療用水素負イオン源における水素負イオン生成量増大のための数値シミュレーション22019

    • Author(s)
      中田裕貴、山田翔太、畑山明聖、星野一生、矢口真子、北見尚久、青木康、高橋信明、野村真史
    • Organizer
      第36回プラズマ・核融合学会年会
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2025-01-30  

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