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Selective ion and electron heating and potential formation using mode conversions of ICRF waves in HIEI

Y. Yasaka, O. Sakai, H. Takeno, H. Hojo1994年被引用 9Nuclear FusionIF 3出版社

Plasma heating and potential formation by ion cyclotron range of frequencies (ICRF) waves are investigated in the HIEI tandem mirror. It is demonstrated that ions and electrons are selectively heated by the appropriate waves that have been mode converted from the fast magnetosonic wave in a two-ion-species plasma. In the central cell, the minority ions can be heated up to 0.3 keV with the presence of the mode-converted slow ion cyclotron wave. Plug cell electrons are heated by the mode-converted electrostatic slow wave resulting in the formation of an ion confining potential. The dependence of the ion confining potential on the plug electron temperature is in qualitative agreement with values predicted by the improved modified Boltzmann relation which includes velocity space diffusion of electrons due to the ICRF wave. The axial confinement of the core plasma is improved by the ICRF produced potential

日本語訳

HIEIタンデムミラーにおいて、イオンサイクロトロン周波数帯(ICRF)波によるプラズマ加熱とポテンシャル形成を調査した。2種イオン種プラズマ中で高速磁気音波からモード変換された適切な波によって、イオンと電子が選択的に加熱されることが実証された。中央セルでは、モード変換された低速イオンサイクロトロン波の存在下で、少数種イオンを0.3 keVまで加熱できる。プラグセル電子は、モード変換された静電低速波によって加熱され、その結果イオン閉じ込めポテンシャルの形成が生じる。イオン閉じ込めポテンシャルのプラグ電子温度への依存性は、ICRF波による電子の速度空間拡散を含む改良型修正ボルツマン関係によって予測される値と定性的に一致する。コアプラズマの軸方向閉じ込めは、ICRFによって生成されたポテンシャルにより改善される。

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Ion cyclotron heatingElectron heating
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