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Experimental study of non-thermal electron generation by lower hybrid waves in the ASDEX tokamak

R. Bartiromo, M. Hesse, F.X. Söldner, R. Burhenn, G. Fussmann, F. Leuterer, H. Murmann, D. Eckhartt, A. Eberhagen, A. Giuliana1986年被引用 16Nuclear FusionIF 3出版社

High resolution X-ray spectroscopy was used to evaluate the fractional population of non-thermal electrons generated when electromagnetic waves in the lower hybrid frequency range are launched in the ASDEX tokamak. In complete current drive discharges a typical value of 1% is found for this parameter, in agreement with a theoretical estimate. Furthermore, it is shown that the toroidal electric field is very effective in enhancing tail electron generation, as confimed by β measurements, and that the wave penetration to the plasma centre is inhibited when interaction of the waves with plasma ions is the dominant damping mechanism.

日本語訳

高分解能X線分光法を用いて、ASDEXトカマクにおいて低混成周波数帯の電磁波を入射した際に生成される非熱電子の割合を評価した。完全な電流駆動放電において、この割合は典型的には1%であり、理論的見積もりと一致する。さらに、トロイダル方向の電場が非熱電子の生成を効果的に促進することが示され、これはβ測定によって確認された。また、プラズマイオンとの相互作用が主要な減衰機構となる場合、波動のプラズマ中心部への到達が阻害されることが明らかになった。

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