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Non-linear analysis of the toroidicity induced Alfven eigenmode

R.B. White, Y. Wu, Y. Chen, E.D. Fredrickson, D.S. Darrow, M.C. Zarnstorff, J.R. Wilson, S.J. Zweben, K.W. Hill, G.Y. Fu1995年被引用 14Nuclear FusionIF 3出版社

A fast and efficient numerical algorithm using energy conservation is developed to study the interaction of high energy particles with a toroidicity induced Alfven eigenmode (TAE). A Hamiltonian guiding centre code is used to simulate the alpha particle motion and a non-linear delta f scheme is employed to calculate the wave-particle energy exchange. For a single TAE mode, the particle radial excursion is much less than the spacing between the resonances produced by the poloidal harmonics for International Thermonuclear Experimental Reactor parameters. Modification of the particle distribution leading to mode saturation is observed. A TAE is found in some cases to cause loss through induced ripple trapping

日本語訳

エネルギー保存を用いた高速かつ効率的な数値アルゴリズムを開発し、高エネルギー粒子とトロイダル性誘起アルヴェン固有モード(TAE)との相互作用を研究する。ハミルトニアン・ガイドセンターコードを用いてアルファ粒子の運動をシミュレートし、非線形デルタfスキームを採用して波動-粒子間のエネルギー交換を計算する。単一のTAEモードに対して、粒子の径方向変位は、国際熱核融合実験炉(ITER)のパラメータにおけるポロイダル高調波によって生成される共鳴間の間隔よりもはるかに小さい。モードの飽和をもたらす粒子分布の変形が観測される。TAEは、ある場合には、誘起リップル捕捉による損失を引き起こすことが見出される。

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Alfvén waveAlfvén eigenmode
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