Theoretical and numerical study on magnetic field generation by rela- tivistic baroclinic effect

• Project/Area Number: 26800279
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Plasma science
• Research Institution: The University of Tokyo
• Principal Investigator: Kawazura Yohei 東京大学, 大学院新領域創成科学研究科, 助教 (80725375)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000); Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
• Keywords: 電磁流体力学 / 最小作用の原理 / リラベリング対称性 / 相対論 / ヘリシティ / 拡張電磁流体力学 / 相対論的プラズマ / 傾圧効果 / 最小作用原理 / Clebschポテンシャル / 対称性

Outline of Final Research Achievements

We found the relativistic helicity, which is conserved in four-dimensional space time, is originated from the relabeling symmetry of a fluid element. Next we formulated the action principle for the extended relativistic magnetohydrodynamics (MHD). This action principle encompasses other magnetohydrodynamic models. The relativistic Hall MHD model, which is derived by this action principle, includes electron's thermal inertia; and thus it is possible to induce collision less magnetic reconnection with ion skin depth scale. Furthermore, in relativistic Hall MHD, since the fast magnetosonic wave reaches to the light limit, the fast wave group surface coalesce with that of the shear Alfven wave. We conducted a numerical simulation for ultra-high intensity laser experiment, and elucidated the plasma regime where the relativistic baroclinic effect is finite.

Research Products

• [Int'l Joint Research] The University of Texas at Austin(米国)
• [Journal Article] Action Principles for Relativistic Extended Magnetohydrodynamics: A Unified Theory of Magnetofluid Models (2017)
  • Author(s): Y. Kawazura, G. Miloshevich, and P. J. Morrison
  • Journal Title: Physics of Plasmas Volume: 24 Issue: 2 Pages: 0221031-10
  • DOI: 10.1063/1.4975013
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Self-Organization and Heating by Inward Diffusion in Magnetospheric Plasmas (2016)
  • Author(s): N. Sato, Z. Yoshida and Y. Kawazura
  • Journal Title: Plasma and Fusion Research Volume: 11 Issue: 0 Pages: 2401009-2401009
  • DOI: 10.1585/pfr.11.2401009
  • NAID: 130005330462
  • ISSN: 1880-6821
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Anisotropy in Broad Component of H<i>α</i> Line in the Magnetospheric Device RT-1 (2016)
  • Author(s): Y. Kawazura, N. Takahashi, Z. Yoshida, M. Nishiura, T. Nogami, A. Kashyap, Y. Yano, H. Saitoh, M. Yamasaki, T. Mushiake, and M. Nakatsuka
  • Journal Title: Plasma and Fusion Research Volume: 11 Issue: 0 Pages: 2402024-2402024
  • DOI: 10.1585/pfr.11.2402024
  • NAID: 130005330495
  • ISSN: 1880-6821
  • Peer Reviewed / Open Access
• [Journal Article] Increased Ion Temperature by Slow Wave Heating in magnetosphere plasma device RT-1 (2016)
  • Author(s): M. Nishiura, Z. Yoshida, Y. Yano, Y. Kawazura, T. Mushiake, H. Saitoh, M. Yamasaki, A. Kashyap, N. Takahashi, M. Nakatsuka, Y. Takase, and A. Fukuyama
  • Journal Title: Plasma and Fusion Research Volume: 11
  • NAID: 130005395218
  • Open Access
• [Journal Article] Observation of particle acceleration in laboratory magnetosphere (2015)
  • Author(s): Y. Kawazura, Z. Yoshida, M. Nishiura, H. Saitoh, Y. Yano, T. Nogami, N. Sato, M. Yamasaki, A. Kashyap, and T. Mushiake
  • Journal Title: Physics of Plasmas Volume: 22 Issue: 11 Pages: 1125031-8
  • DOI: 10.1063/1.4935894
  • Peer Reviewed
• [Journal Article] Ion cyclotron heating experiments in magnetosphere plasma device RT-1 (2015)
  • Author(s): M. Nishiura, Z. Yoshida, Y. Yano, Y. Kawazura, H. Saitoh, M. Yamasaki, T. Mushiake, A. Kashyap, N. Takahashi, M. Nakatsuka, and A. Fukuyama
  • Journal Title: AIP Conference Proceedings Volume: 1689 Pages: 0400021-4
  • DOI: 10.1063/1.4936485
  • Peer Reviewed
• [Journal Article] Relabeling symmetry in relativistic fluids and plasmas (2014)
  • Author(s): Y. Kawazura, Z. Yoshida, and Y. Fukumoto
  • Journal Title: J. Phys. A: Math. Theor. Volume: 47 Issue: 46 Pages: 4655011-17
  • DOI: 10.1088/1751-8113/47/46/465501
  • NAID: 130005478019
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] Covariant Hamiltonian theory of extended MHD and applications to collisionless reconnection (2017)
  • Author(s): G. Miloshevich, Y. Kawazura, P. J. Morrison
  • Organizer: The Sherwood Fusion Theory Conference
  • Place of Presentation: Annapolis, USA
  • Year and Date: 2017-05-01
  • Int'l Joint Research
• [Presentation] Action Principle for Relativistic Extended Magnetohydrodynamics (2016)
  • Author(s): Y. Kawazura, G. Miloshevich, P. J. Morrison
  • Organizer: 2nd Geometric Algorithms and Methods for Plasma Physics Workshop
  • Place of Presentation: Garching, Germany
  • Year and Date: 2016-09-12
  • Int'l Joint Research / Invited
• [Presentation] Particle acceleration in laboratory magnetosphere (2016)
  • Author(s): Y. Kawazura
  • Organizer: 6th East-Asia School and Workshop on Laboratory, Space, and Astrophysical plasmas
  • Place of Presentation: つくば国際会議場（茨城県つくば市）
  • Year and Date: 2016-07-11
  • Int'l Joint Research / Invited
• [Presentation] 磁気圏型装置RT-1における反磁性信号の遷移現象 (2016)
  • Author(s): 川面洋平, 吉田善章, 西浦正樹, Kashyap Ankur, 矢野善久, 齋藤晴彦, 山崎美由梨, 虫明敏生, 高橋典生, 中塚正崇
  • Organizer: 日本物理学会第71回年次大会
  • Place of Presentation: 東北学院大学（宮城県仙台市）
  • Year and Date: 2016-03-20
• [Presentation] Anisotropy in broad component of Hα line in the magnetospheric device RT-1 (2015)
  • Author(s): Y. Kawazura, Z. Yoshida, M. Nishiura, Y. Yano, H. Saitoh, T. Nogami, T. Mushiake, M. Yamasaki, A. Kashyap, N. Takahashi, and M. Nakatsuka
  • Organizer: 25th International Toki Conference (ITC-25)
  • Place of Presentation: Ceratopia Toki, Toki, Gifu, Japan
  • Year and Date: 2015-11-03
  • Int'l Joint Research
• [Presentation] 磁気圏型プラズマ装置RT-1におけるイオン温度非等方性の生成機構 (2015)
  • Author(s): 川面洋平, 吉田善章, 西浦正樹, 矢野善久, 山崎美由梨, 虫明敏生, Kashyap Ankur, 高橋典生, 中塚正崇, 佐藤直木
  • Organizer: 日本物理学会2015年秋季大会
  • Place of Presentation: 関西大学（大阪府吹田市）
  • Year and Date: 2015-09-17
• [Presentation] Relabeling symmetry in relativistic fluids and plasmas (2014)
  • Author(s): Yohei Kawazura, Zensho Yoshida and Yasuhide Fukumoto
  • Organizer: 56th Annual Meeting of the APS Division of Plasma Physics
  • Place of Presentation: New Orleans, Louisiana(USA)
  • Year and Date: 2014-10-28
• [Presentation] 相対論的流体/プラズマにおけるリラベリング対称性 (2014)
  • Author(s): 川面洋平，吉田善章，福本康秀
  • Organizer: 第63回理論応用力学講演会
  • Place of Presentation: 東京工業大学(東京都，目黒区)
  • Year and Date: 2014-09-28
• [Presentation] 相対論的流体/プラズマにおけるリラベリング対称性 (2014)
  • Author(s): 川面洋平，吉田善章，福本康秀
  • Organizer: 日本流体力学会年会2014
  • Place of Presentation: 東北大学(宮城県，仙台市)
  • Year and Date: 2014-09-16
• [Presentation] 高強度レーザー実験における相対論効果による種磁場形成の数値計算 (2014)
  • Author(s): 川面洋平，吉田善章
  • Organizer: 日本地球惑星科学連合 連合大会
  • Place of Presentation: パシフィコ横浜会議センター(神奈川県，横浜市)
  • Year and Date: 2014-04-29