Kinetic equations for low frequency instabilities in inhomogeneous plasmas
Kinetic equations for low frequency instabilities in inhomogeneous plasmas
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DOI：
10.1063/1.863121
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发表时间：
1980-06
影响因子：
4.6
通讯作者：
T. Antonsen;B. Lane
中科院分区：
文献类型：
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作者：
T. Antonsen;B. Lane
建立了非均匀磁约束等离子体中低频、短垂直波长、电磁扰动的动力学方程。该分析利用最近发展的高环面模态数展开将最低阶方程组简化为一组普通（沿场线）积分微分方程。这些方程包括有限拉莫尔半径、磁剪切、捕获粒子和非均匀磁曲率漂移的影响。扰动场由标量势和矢量势的两个分量表示。因此，扰动磁场的压缩分量的影响被保留，方程对任意等离子体压力值都是有效的。讨论了高环面模数展开式在非轴对称构型中的推广。
Kinetic equations for low frequency, short perpendicular wavelength, electromagnetic perturbations in an inhomogeneous, magnetically confined plasma are developed. The analysis makes use of the recently developed high toroidal mode number expansion to reduce the lowest‐order system of equations to a set of ordinary (along the field line) integro‐differential equations. Included in these equations are the effects of finite Larmor radius, magnetic shear, trapped particles, and nonuniform magnetic curvature drifts. Perturbed fields are represented by a scalar potential and two components of the vector potential. Thus, the effects of the compressional component of the perturbed magnetic field are retained and the equations are valid for arbitrary values of the plasma pressure. The extension of the high toroidal mode number expansion to nonaxisymmetric configurations is discussed.