An Analysis of Current Drive by Travelling Wave Based on Theory of Intrinsic Stochasticity
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概要
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The mechanism of the current generation in a collisionless plasma by a train of travelling mirrors with modulated phase velocity is studied based on the theory of intrinsic stochasticity. It is shown that, if the phase modulation is small, the main contribution to the current generation comes from the phase mixing of the trajectories of trapped electrons in each Fourier component of a driving wave. For the case of a moderate phase modulation, however, formation of a large stochastic region due to the overlapping of primary resonances is very effective for increasing the generated current. Large phase modulation has little advantage in the current generation because the stochastic regions are formed, so to speak, at random in the phase plane. The results of analytical evaluation based on the above theory agree quite well with results of numerical experiments.
- 核融合科学研究所の論文
著者
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Murakami Akihiko
Research Information Center Institute Of Plasma Physics Nagoya University
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Midzuno Yukio
Research Information Center Institute Of Plasma Physics Nagoya University
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Midzuno Yukio
Reseach Information Center Institute Of Plasma Physics Nagoya University
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