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Nonlinear gyrokinetics of high β axisymmetric plasmas

A Rogister, G Hasselberg1985年Plasma Physics and Controlled FusionIF 2.2出版社

The authors derive the nonlinear gyrokinetic equation for axisymmetric plasmas in its most general form, i.e. including finite beta , collisions, driving toroidal electric field, and, accordingly, non-Maxwellian, poloidally dependent unperturbed distribution functions. The authors note the relation between the assumption of radial periodicity of the linear eigenfunction-the period being a multiple of the distance between rational surfaces-and the ballooning representation. They remark that this assumption is not justified in the presence of nonlinear interactions, and, from there, suggest a possible saturation mechanism of the potentially dangerous toroidicity induced modes.

日本語訳

著者らは、軸対称プラズマに対するジャイロ運動論方程式を、最も一般的な形、すなわち有限ベータ、衝突、駆動トロイダル電場、およびそれに伴う非マクスウェル型でポロイダルに依存する非摂動分布関数を含む形で導出する。著者らは、線形固有関数の動径方向の周期性(その周期が有理面間の距離の倍数であること)とバルーニング表現との関係に注目する。著者らは、この仮定が非線形相互作用の存在下では正当化されないことを指摘し、そこから、潜在的に危険なトロイダリティ誘起モードの可能な飽和機構を示唆する。

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