Particle acceleration by a collisionless shock wave and effects of instabilities driven by energetic particles

• Project/Area Number: 24540535
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Plasma science
• Research Institution: National Institute for Fusion Science (2014); Nagoya University (2012-2013)
• Principal Investigator: MIEKO Toida 核融合科学研究所, ヘリカル研究部, 准教授 (00273219)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000); Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
• Keywords: 無衝突衝撃波 / 粒子加速 / 不安定性 / 粒子シミュレーション / 磁気音波 / 粒子捕捉 / 非線形磁気音波 / 多種イオンプラズマ

Outline of Final Research Achievements

Collisionless shock waves and particle acceleration are important issues in plasma physics and are believed to play essential roles in high-energy phenomena in astrophysical plasmas. We studied structure formation and particle acceleration in magnetosonic shock waves and effects of instabilities driven by accelerated particles. An oblique shock wave can trap and accelerate electrons to ultrarelativistic energies. We showed that instabilities driven by these electrons can cause detrapping and subsequent acceleration of electrons. We also studied formation of forward and reverse shock waves in an external magnetic field with attention to effects of modified two-stream instabilities. In addition, we constructed a theory for finite beta effects on nonlinear magnetosonic waves in a plasma containing electrons and multiple species of ionsa.

Research Products

• [Journal Article] Simulation Studies of Shock Formation due to Interactions of Two Plasmas in a Magnetic Field and Modified Two-Stream Instabilities (2015)
  • Author(s): T. Uragami and M. Toida
  • Journal Title: Plasma and Fusion Research Volume: 9 Issue: 0 Pages: 3401035-3401035
  • DOI: 10.1585/pfr.9.3401035
  • NAID: 130005098524
  • ISSN: 1880-6821
  • Peer Reviewed
• [Journal Article] Parametric Studies of Ultrarelativistic Electron Acceleration by an Oblique Shock Wave (2014)
  • Author(s): M. Toida and J. Inagaki
  • Journal Title: Plasma and Fusion Research Volume: 9 Issue: 0 Pages: 3401026-3401026
  • DOI: 10.1585/pfr.9.3401026
  • NAID: 130005098527
  • ISSN: 1880-6821
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Shock formation processes due to interactions of two plasmas in a magnetic field and modified two-stream instabilities (2013)
  • Author(s): M. Toida and T. Uragami
  • Journal Title: Phys. Plasmas Volume: 11 Issue: 11
  • DOI: 10.1063/1.4831771
  • Peer Reviewed
• [Journal Article] Formation of forward and reverse shock waves in a magnetized plasma: Two-dimensional particle simulations (2013)
  • Author(s): T. Uragami and M. Toida
  • Journal Title: Plasma and Fusion Res. Volume: 8
  • NAID: 130004678528
  • Peer Reviewed
• [Journal Article] Finite beta effects on low- and high-frequency magnetosonic waves in a two-ion-species plasma (2013)
  • Author(s): M. Toida and Y. Aota
  • Journal Title: Phys. Plasmas Volume: 8 Issue: 8
  • DOI: 10.1063/1.4817169
  • Peer Reviewed
• [Journal Article] Theory for Finite Temperature Effects on Magnetosonic Waves in a Two-Ion-Species Plasma (2013)
  • Author(s): Theory for finite temperature effects on magnetosonic waves in a two-ion-species plasma
  • Journal Title: Plasma and Fusion Research Volume: 8 Issue: 0 Pages: 2401018-2401018
  • DOI: 10.1585/pfr.8.2401018
  • NAID: 130004678503
  • ISSN: 1880-6821
  • Peer Reviewed
• [Journal Article] Simulation Studies of Detrapping of Ultrarelativistic Electrons from an Oblique Shock Wave due to Multidimensional Fluctuations (2013)
  • Author(s): Simulation studies of detrapping of ultrarelativistic electrons from an oblique shock wave due to multidimensional fluctuations
  • Journal Title: Plasma and Fusion Research Volume: 8 Issue: 0 Pages: 2401031-2401031
  • DOI: 10.1585/pfr.8.2401031
  • NAID: 130004678509
  • ISSN: 1880-6821
  • Peer Reviewed
• [Journal Article] 斜め衝撃波中の電子の運動における波面方向の電磁揺動の効果 (2012)
  • Author(s): Effects of electromagnetic fluctuations along shock front on electron motion in an oblique shock wave
  • Journal Title: J. Phys. Soc. Jpn Volume: 81 Issue: 8 Pages: 084502-084502
  • DOI: 10.1143/jpsj.81.084502
  • Peer Reviewed
• [Journal Article] 斜め衝撃波中の電子加速における多次元効果についてのシミュレーション研究 (2012)
  • Author(s): Simulation studies of multi-dimensional effects on electron acceleration by an oblique shock wave
  • Journal Title: Proceedings of 39th European Physical Society Conference on Plasma Physics and 16th International Congress on Plasma Physics Volume: 1
• [Presentation] 斜め衝撃波中のイオン運動における多次元電磁揺動の効果 (2014)
  • Author(s): 稲垣順也、樋田美栄子
  • Organizer: Plasma Conference 2014/ 日本物理学会（領域2）2014年秋季大会、プラズマ・核融合学会第31回年会
  • Place of Presentation: 新潟 朱鷺メッセ国際会議場
  • Year and Date: 2014-11-18 – 2014-11-21
• [Presentation] 斜め衝撃波による電子の捕捉とイオンの反射 (2014)
  • Author(s): 樋田美栄子、稲垣順也
  • Organizer: Plasma Conference 2014/ 日本物理学会（領域2）2014年秋季大会、プラズマ・核融合学会第31回年会
  • Place of Presentation: 新潟 朱鷺メッセ国際会議場
  • Year and Date: 2014-11-18 – 2014-11-21
• [Presentation] 斜め衝撃波による電子の捕捉とイオンの反射についての多次元粒子シミュレーション (2014)
  • Author(s): 樋田美栄子、稲垣順也
  • Organizer: プラズマシミュレータシンポジウム2013
  • Place of Presentation: 核融合科学研究所
  • Year and Date: 2014-09-10 – 2014-09-12
• [Presentation] 斜め衝撃波によるイオン反射における多次元電磁揺動の効果 (2014)
  • Author(s): 稲垣順也、樋田美栄子
  • Organizer: プラズマ科学のフロンティア研究会
  • Place of Presentation: 核融合科学研究所
  • Year and Date: 2014-08-06 – 2014-08-08
• [Presentation] 無衝突衝撃波による粒子加速とそれに伴う不安定性 (2014)
  • Author(s): 樋田美栄子
  • Organizer: 核融合科学研究所平成25年度一般共同研究成果報告会
  • Place of Presentation: 核融合科学研究所
• [Presentation] 磁場中の二つのプラズマの相互作用による衝撃波の形成と変形二流体不安定性 (2014)
  • Author(s): 樋田美栄子、浦上達里
  • Organizer: 日本物理学会 2013年年次大会
  • Place of Presentation: 東海大学湘南キャンパス
• [Presentation] Finite beta effects on nonlinear low- and high-frequency magnetosonic waves in a two-ion-species plasma (2013)
  • Author(s): Y. Aota and M. Toida
  • Organizer: The 12th Asia Pacific Physics Conference
  • Place of Presentation: Makuhari, Chiba, Japan
• [Presentation] Effects of modified two-stream instabilities on formation of forward and reverse shock waves in a magnetic field (2013)
  • Author(s): T. Uragami and M. Toida
  • Organizer: The 12th Asia Pacific Physics Conference
  • Place of Presentation: Makuhari, Chiba, Japan
• [Presentation] 磁化プラズマ中の前進・後進衝撃波の形成についての多次元粒子シミュレーション (2013)
  • Author(s): 浦上達里、樋田美栄子
  • Organizer: プラズマ科学のフロンティア2013研究会
  • Place of Presentation: 核融合科学研究所
• [Presentation] 磁化プラズマ中の前進・後進衝撃波の形成についての粒子シミュレーション (2013)
  • Author(s): 樋田美栄子
  • Organizer: プラズマシミュレータシンポジウム2013
  • Place of Presentation: 核融合科学研究所
• [Presentation] Parametric studies of ultrarelativistic electron acceleration by an oblique shock wave (2013)
  • Author(s): Ｍ． Ｔｏｉｄａ
  • Organizer: The 23rd International Toki Conference (ITC-23) on “Large-scale Simulation and Fusion Science”
  • Place of Presentation: Ceratopia Toki, Toki-Chity, Gifu Japan
• [Presentation] Shock formation processes in a magnetic field and modified two-stream instabilities (2013)
  • Author(s): T. Uragami and M. Toida
  • Organizer: The 23rd International Toki Conference (ITC-23) on “Large-scale Simulation and Fusion Science”
  • Place of Presentation: Ceratopia Toki, Toki-City, Gifu, Japan
• [Presentation] Simulation studies of shock formation and particle acceleration in a magnetized plasma (2013)
  • Author(s): M. Toida
  • Organizer: 2013 JIFT workshop on new aspects of plasma kinetic simulation
  • Place of Presentation: 核融合科学研究所
• [Presentation] 磁場中の２つのプラズマの相互作用による衝撃波の形成過程 (2013)
  • Author(s): 樋田美栄子、浦上達里
  • Organizer: STEシミュレーション研究会 ＆ STPシミュレーション・モデリング技法勉強会 名古屋大学太陽地球環境研究所主催
  • Place of Presentation: 九州大学
• [Presentation] 斜め衝撃波中の高エネルギー電子における多次元電磁揺動の効果 (2013)
  • Author(s): 樋田美栄子、城宝潤矢
  • Organizer: 日本物理学会2013年年次大会
  • Place of Presentation: 広島大学
• [Presentation] 斜め衝撃波による電子の捕捉と加速における多次元電磁揺動の効果 (2013)
  • Author(s): 樋田美栄子、城宝潤矢
  • Organizer: STEシミュレーション研究会 ＆ STPシミュレーション・モデリング技法勉強会
  • Place of Presentation: 名古屋大学
• [Presentation] Formation of forward and reverse shock waves in a magnetized plasma: Two-dimensional particle simulations (2012)
  • Author(s): T. Uragami and M. Toida
  • Organizer: 2nd International Toki Conference, "Cross-Validation of Experiment and Modeling for Fusion and Astrophysical Plasmas
  • Place of Presentation: Ceratopia Toki, Toki, Japan
• [Presentation] Theory for finite temperature effects on magnetosonic waves in two-ion-species plasmas (2012)
  • Author(s): Y. Aota and M. Toida
  • Organizer: 22nd International Toki Conference, "Cross-Validation of Experiment and Modeling for Fusion and Astrophysical Plasmas
  • Place of Presentation: Ceratopia Toki, Toki, Japan
• [Presentation] Simulation studies of detrapping of ultrarelativistic electrons from an oblique shock wave due to multi-dimensional fluctuations (2012)
  • Author(s): M. Toida and J. Joho
  • Organizer: 22nd International Toki Conference, "Cross-Validation of Experiment and Modeling for Fusion and Astrophysical Plasmas
  • Place of Presentation: Ceratopia Toki, Toki, Japan
• [Presentation] 磁化プラズマ中の前進・後進衝撃波の形成と多次元構造 (2012)
  • Author(s): 浦上達里、樋田美栄子
  • Organizer: 日本物理学会 2012年秋季大会
  • Place of Presentation: 横浜国立大学
• [Presentation] 多種イオンプラズマ中の直角磁気音波における有限ベータの効果 (2012)
  • Author(s): 青田由希雄、樋田美栄子
  • Organizer: 日本物理学会 2012年秋季大会
  • Place of Presentation: 横浜国立大学
• [Presentation] 斜め衝撃波中の高エネルギー電子における多次元電磁揺動の効果 (2012)
  • Author(s): 樋田美栄子、城宝潤矢
  • Organizer: プラズマシミュレータシンポジウム2012
  • Place of Presentation: 核融合科学研究所
• [Presentation] 斜め衝撃波による電子加速における多次元効果 (2012)
  • Author(s): 樋田美栄子、城宝潤矢
  • Organizer: プラズマ科学のフロンティア2012研究会
  • Place of Presentation: 核融合科学研究所
• [Presentation] Simulation studies of multi-dimensional effects on electron acceleration by an oblique shock wave (2012)
  • Author(s): M. Toida and J. Joho
  • Organizer: 39th European Physical Society Conference on Plasma Physics and 16th International Congress on Plasma Physics,
  • Place of Presentation: Stockholm, Sweden,