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Drift cyclotron and lower-hybrid drift instabilities with magnetic shear

J.B. McBride, N.A. Krall1978年被引用 4Nuclear FusionIF 3出版社

Results from a stability analysis of drift cyclotron and lower-hybrid drift instabilities in the presence of magnetic shear are presented. In the case of the lower-hybrid drift modes, including finite electron gyroradius (kρe ≳ 1), we find that low-density systems (ωpe < ωce) are much easier to stabilize with shear than are high-density systems (ωpe > ωce). For drift ion-cyclotron modes, shear reduces the growth rate rather than stabilizing the modes, becoming significant for |Ls/Ln|<(mi/me)1/2 (ρi/|Ln|)1/2.

日本語訳

磁気シアの存在下でのドリフトサイクロトロン不安定性および低混成ドリフト不安定性の安定性解析の結果を示す。低混成ドリフトモードの場合、有限の電子ジャイロ半径(kρe ≳ 1)を含めると、低密度系(ωpe < ωce)は高密度系(ωpe > ωce)よりも磁気シアによってはるかに安定化されやすいことがわかった。ドリフトイオンサイクロトロンモードについては、磁気シアはモードを安定化させるのではなく成長率を低下させ、その効果は |Ls/Ln| < (mi/me)1/2 (ρi/|Ln|)1/2 において顕著となる。

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