Effect of parallel velocity shear on the excitation of electrostatic ion cyclotron waves

被引：29

作者：

Agrimson, EP ^{[1
]}

D'Angelo, N ^{[1
]}

Merlino, RL ^{[1
]}

机构：

[1] Univ Iowa, Dept Phys & Astron, Iowa City, IA 52242 USA

来源：

PHYSICS LETTERS A | 2002年 / 293卷 / 5-6期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/S0375-9601(02)00026-9

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The effect of a magnetic field aligned plasma flow with a transverse velocity gradient (parallel velocity shear) on the excitation of electrostatic ion cyclotron (EIC) waves was investigated experimentally in a Q machine, The role of parallel velocity shear was studied for EIC waves excited in a single-ended cesium plasma, in the usual manner, by drawing an electron current to a disk electrode having a diameter less than the diameter of the plasma column. Observations indicate that EIC waves were excited when both electron current and parallel velocity shear were present. However, EIC waves were never excited when shear was present in the absence of current. Experiments were also performed in a double-ended Q machine configuration to further investigate the role of shear. (C) 2002 Published by Elsevier Science B.V.

引用

页码：260 / 265

页数：6

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