Energy channeling from energetic particles to bulk ions via beam-driven geodesic acoustic modes - GAM channeling

M. Sasaki, K. Itoh, S. I. Itoh

研究成果: ジャーナルへの寄稿記事

27 引用 (Scopus)

抄録

A novel mechanism for energy transfer from energetic particles to bulk ions via geodesic acoustic modes (GAMs) is presented. The mechanism involves the excitation of GAMs by energetic particles. The GAMs are damped on ions by the Landau damping, by which wave energy is given to bulk ions. This process of energy exchange is formulated within the framework of quasilinear theory. The rate of energy transfer from energetic particles to GAMs can be comparable to that of energy exchange to particles via collisions, if the E × B velocity of GAMs reaches the level of diamagnetic velocity. Under this circumstance, the partition of energy absorptions by bulk ions and electrons is substantially modified due to the selective ion heating by GAMs.

元の言語英語
記事番号085017
ジャーナルPlasma Physics and Controlled Fusion
53
発行部数8
DOI
出版物ステータス出版済み - 8 1 2011

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energetic particles
ion beams
acoustics
Ions
energy transfer
Energy transfer
ions
energy
Energy absorption
particle collisions
Landau damping
energy absorption
Ion exchange
Damping
partitions
Heating
Electrons
heating
excitation
electrons

All Science Journal Classification (ASJC) codes

  • Nuclear Energy and Engineering
  • Condensed Matter Physics

これを引用

Energy channeling from energetic particles to bulk ions via beam-driven geodesic acoustic modes - GAM channeling. / Sasaki, M.; Itoh, K.; Itoh, S. I.

:: Plasma Physics and Controlled Fusion, 巻 53, 番号 8, 085017, 01.08.2011.

研究成果: ジャーナルへの寄稿記事

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