FusionPapers
図版検索トレンドwiki日本の研究
© 2026 FUSIONPAPERS
About法務情報
トップに戻る

Adiabatic description of long range frequency sweeping

R.M. Nyqvist, M.K. Lilley, B.N. Breizman2012年被引用 17Nuclear FusionIF 3出版社

A theoretical framework is developed to describe long range frequency sweeping events in the 1D electrostatic bump-on-tail model with fast particle sources and collisions. The model includes three collision operators (Krook, drag (dynamical friction) and velocity space diffusion), and allows for a general shape of the fast particle distribution function. The behaviour of phase space holes and clumps is analysed in the absence of diffusion, and the effect of particle trapping due to separatrix expansion is discussed. With a fast particle distribution function whose slope decays above the resonant phase velocity, hooked frequency sweeping is found for holes in the presence of drag collisions alone.

日本語訳

高速粒子源と衝突を伴う1次元静電バンプ・オン・テール模型における長距離周波数掃引現象を記述する理論的枠組みを構築する。この模型は3つの衝突演算子(クルック、ドラッグ(動的摩擦)、速度空間拡散)を含み、高速粒子分布関数の一般的な形状を許容する。拡散がない場合の位相空間ホールとクランプの挙動を解析し、セパラトリックス膨張による粒子捕捉の効果を議論する。高速粒子分布関数の傾きが共鳴位相速度より上で減衰する場合、ドラッグ衝突のみの存在下でホールに対してフック状の周波数掃引が見いだされる。

この論文にはまだAI要約がありません。

関連論文

Nonlinear travelling waves in energetic particle phase space

2010Nuclear Fusion

Impact of energetic particle orbits on long range frequency chirping of BGK modes

2017Nuclear Fusion

Unstable ring-shaped ion distribution functions induced by charge–exchange collisions

2013Plasma Physics and Controlled Fusion

Quasilinear theory revisited: general kinetic formulation of wave–particle interactions in plasmas

2010Plasma Physics and Controlled Fusion

Convective transport of fast particles in dissipative plasmas near an instability threshold

2012Nuclear Fusion

Nonlinear trapping in wave–particle interactions in tokamaks

2021Nuclear Fusion

Fully nonlinear phenomenology of the bump-on-tail (BOT) instability with drag, diffusion and Krook relaxation

2026Plasma Physics and Controlled Fusion

Kinetic theory of the anomalous transport of superthermal electrons in toroidal devices

1995Nuclear Fusion

Interaction of energetic particles with large and small scale instabilities

2007Nuclear Fusion

Theory and numerical simulations on collisionless drift instabilities in three dimensions

1978Nuclear Fusion