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

On the possibility of limit-cycle-state of peeling mode near stability boundary in the quiescent H-mode

Kimitaka Itoh, Kensaku Kamiya, Nobuyuki Aiba, Sanae-I Itoh2021年Plasma Physics and Controlled FusionIF 2.2出版社

A model is proposed for the edge harmonic oscillation, in which the stationary coherent mode is sustained in the almost linear phase as has been observed in JT-60U. We study the coupled dynamics of the peeling mode amplitude and edge pressure gradient. The limit cycle oscillation is predicted. The peeling mode (which is almost in the linear phase) is in a dynamical stationary state with amplitude modulation. In this model, the time scales for the change of parameters that specify magnetic structures (such as magnetic shear and edge plasma current) are assumed to be much slower, so that are decoupled from the limit cycle dynamics. The condition that the limit cycle state appears is shown. The oscillation frequency of the modulation is given by the hybrid mean of the typical growth rate of the peeling mode and the additional loss rate of pressure gradient by the peeling mode.

日本語訳

エッジ高調波振動に対するモデルが提案されており、その中で定常コヒーレントモードはJT-60Uで観測されたようにほぼ線形位相で維持される。我々はピーリングモードとエッジ圧力勾配の結合ダイナミクスを研究する。リミットサイクル振動が予測される。ピーリングモード(ほぼ線形位相にある)は振幅変調を伴う動的定常状態にある。このモデルでは、磁気構造を指定するパラメータ(磁気シアやエッジプラズマ電流など)の変化の時間スケールははるかに遅いと仮定され、リミットサイクルダイナミクスから切り離される。リミットサイクル状態が現れる条件が示される。変調の振動周波数は、ピーリングモードの典型的な成長率とピーリングモードによる圧力勾配の追加損失率のハイブリッド平均によって与えられる。

wiki

H-mode
この論文にはまだAI要約がありません。

関連論文

Scaling trends of the critical E  ×  B shear for edge harmonic oscillation onset in DIII-D quiescent H-mode plasmas

2018Nuclear Fusion

MHD simulations of formation, sustainment and loss of quiescent H-mode in the all-tungsten ASDEX Upgrade

2023Nuclear Fusion

MHD limit cycles on FTU

2017Nuclear Fusion

Predictive transport modelling of type I ELMy H-mode dynamics using a theory-motivated combined ballooning–peeling model

2004Plasma Physics and Controlled Fusion

A simple dynamical model of edge localized mode phenomena

1996Plasma Physics and Controlled Fusion

The role of edge current-driven modes in ELM activity

2006Plasma Physics and Controlled Fusion

Observation of a quasi-coherent high-frequency electromagnetic mode at the pedestal region in EAST RF-dominant H-modes

2014Nuclear Fusion

Bursting toroidal Alfvén eigenmodes in KSTAR plasmas

2019Plasma Physics and Controlled Fusion

Experimental identification of I-mode characteristics at the edge of FIRE mode in KSTAR

2025Nuclear Fusion

H-mode pedestal characteristics and MHD stability of the edge plasma in Alcator C-Mod

2002Plasma Physics and Controlled Fusion