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Zonal flow driven by energetic particle during magneto-hydro-dynamic burst in a toroidal plasma

S Ohshima, A Fujisawa, A Shimizu, H Nakano, H Iguchi, Y Yoshimura, K Nagaoka, T Minami, M Isobe, S Nishimura2007年Plasma Physics and Controlled FusionIF 2.2出版社

The internal structural measurements of electric field and density using twin heavy ion beam probes have been performed to elucidate the nonlinear evolution of the magneto-hydro-dynamic (MHD) bursty phenomenon driven by the interaction with high-energy particles in a toroidal plasma. The results have given the finest observation of the internal structure of plasma quantities, such as electric field, density and magnetic field distortion, which nonlinearly develop during the MHD phenomenon. In particular, the finding of a new kind of oscillating zonal flow driven by interaction between energetic particles and MHD modes should be emphasized for burning state plasmas.

日本語訳

重イオンビームプローブを用いた電場および密度の内部構造計測は、トロイダルプラズマにおける高エネルギー粒子との相互作用によって駆動される磁気流体力学(MHD)バースト現象の非線形発展を解明するために実施された。その結果、MHDバースト現象中に非線形的に発展する電場、密度、および磁場の摂動といったプラズマ諸量の内部構造の詳細な観測が達成された。特に、燃焼状態のプラズマにおいて重要となる、高エネルギー粒子とMHDモードとの相互作用によって駆動される新たな振動性帯状流の存在が明らかにされたことは特筆すべき成果である。

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Zonal flowEnergetic particles
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