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Low-frequency turbulence suppression by amplification of synchronized zonal flow with energetic particle driven modes

A. Ghizzo, D. Del Sarto2023年被引用 1Nuclear FusionIF 3出版社

We investigate the suppression of the turbulent transport associated to the emergence of spontaneous internal transport barriers, due to the combined collective effects played by trapped electrons and energetic passing ions. Numerical experiments performed with a 'particle mode' model based on a double gyro-average over the fast cyclotron phase and over the bounce (or transit) phases are used to show the role played by energetic particles in the suppression of the ion-temperature-gradient driven turbulence. We show this occur via phase locking in a Kuramoto-type synchronization process.

日本語訳

我々は、捕捉電子と高エネルギー通過イオンによって果たされる複合的な集団効果による、自発的な内部輸送障壁の出現に関連する乱流輸送の抑制を調査する。高速サイクロトロン位相とバウンス(またはトランジット)位相にわたる二重ジャイロ平均に基づく「粒子モード」モデルを用いて行われた数値実験は、イオン温度勾配駆動乱流の抑制における高エネルギー粒子の役割を示すために使用される。我々は、これが蔵本型同期過程における位相ロックを介して発生することを示す。

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Zonal flowEnergetic particles
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