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The effects of localized absorption on the mode conversion process in the RF heating of plasmas

D.G. Swanson1980年被引用 47Nuclear FusionIF 3出版社

The effects of localized absorption processes on mode conversion in the various RF heating schemes for fusion plasmas are analysed. An asymptotic separation technique separates local and asymptotic behaviour and leads to an integral equation through use of a fourth-order Green's function. Detailed calculations are presented for the deuterium ion cyclotron harmonic case with a hydrogen impurity ranging from impurities dominant to impurities absent. It is shown that as k∥ increases, mode conversion ceases and only ion cyclotron absorption occurs. Details of the E+ field, which has a minimum at resonance, and rotational transform effects are presented. The technique is applied to the other mode conversion processes (Alfvén resonance, electron cyclotron harmonic, incident slow wave) but no numerical results are given.

日本語訳

核融合プラズマにおける種々のRF加熱方式でのモード変換に対する局所吸収過程の影響を解析する。漸近分離法により局所的挙動と漸近的挙動を分離し、4階グリーン関数を用いることで積分方程式が導出される。重水素イオンサイクロトロン高調波の場合について、水素不純物が優勢な場合から不純物が存在しない場合までの詳細な計算が提示される。k∥が増加するにつれてモード変換が停止し、イオンサイクロトロン吸収のみが生じることが示される。共鳴において極小値を有するE+場の詳細と、回転変換効果が提示される。この手法は他のモード変換過程(アルフヴェン共鳴、電子サイクロトロン高調波、入射遅波)にも適用されるが、数値結果は示されない。

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Mode conversion
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