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On the energy confinement times of tokamaks

A. Hirose, H.M. Skarsgard1978年被引用 2Nuclear FusionIF 3出版社

It is shown that a thermal diffusion coefficient (λD Debye length; ωpi ion plasma frequency; ωpe electron plasma frequency; ωce electron cyclotron frequency) gives a reasonable explanation for the empirical scaling law of the energy confinement times of tokamaks, including the recent ISX-A experiment with its relatively low toroidal magnetic field. In the limit of ωpe > ωce, the confinement time becomes independent of the plasma density; this has also been observed in ISX-A. In the same limit, D⊥ essentially becomes the Bohm diffusion coefficient.

日本語訳

熱拡散係数(λD デバイ長;ωpi イオンプラズマ周波数;ωpe 電子プラズマ周波数;ωce 電子サイクロトロン周波数)が、比較的低いトロイダル磁場を有する最近のISX-A実験を含む、トカマクのエネルギー閉じ込め時間の経験的スケーリング則に対して合理的な説明を与えることが示される。ωpe > ωce の極限では、閉じ込め時間はプラズマ密度に依存しなくなる;これはISX-Aでも観測されている。同じ極限では、D⊥ は本質的にボーム拡散係数になる。

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