Laboratory observations of shear Alfven waves launched from a small source

被引：55

作者：

Leneman, D ^{[1
]}

Gekelman, W ^{[1
]}

Maggs, J ^{[1
]}

机构：

[1] Univ Calif Los Angeles, Dept Phys, Los Angeles, CA 90095 USA

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 82卷 / 13期

关键词：

D O I：

10.1103/PhysRevLett.82.2673

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Shear Alfven waves with transverse scales of electron skin-depth size are launched with a dual-disk antenna in the Large Plasma Device at UCLA. The waves are studied in the kinetic and inertial regimes. The kinetic shear Alfven wave is observed for the first time and exhibits predicted radial structure. The perpendicular propagation of the wave is also studied for the first time, and it is found to be backward in the inertial regime, as expected. The wave currents are calculated from magnetic field measurements and are found to flow in toroidal vortices. [S0031-9007(99)08772-4].

引用

页码：2673 / 2676

页数：4

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