TRANSVERSE KELVIN-HELMHOLTZ INSTABILITY IN A ROTATING PLASMA

被引：122

作者：

KENT, GI

JEN, NC

CHEN, FF

机构：

[1] Systems, Science and Software, San Diego, CA

[2] City College, City University of New York, New York, NY

[3] Princeton University, Princeton, NJ

来源：

PHYSICS OF FLUIDS | 1969年 / 12卷 / 10期

关键词：

D O I：

10.1063/1.1692323

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

In thermally ionized alkali-metal plasmas (Q machines), two types of low-frequency oscillations are found: the usual drift wave localized to the region of large-density gradient, and a higher-frequency wave localized to the region of the radial boundary. The latter edge" oscillation is shown to be a Kelvin-Helmholtz instability driven by the large shear in plasma rotational velocity at the boundary. An analytic solution of the finite-Larmor-radius dispersion equation for the unstable wave is found by making the simplifying assumption that the rotational velocity jumps discontinuously. The results agree reasonably well with experimental measurements."

引用

页码：2140 / &

共 23 条

[1] UNIVERSAL INSTABILITY IN A POTASSIUM PLASMA [J].