Observation of compressional Alfven modes during neutral-beam heating on the National Spherical Torus Experiment

被引：78

作者：

Fredrickson, ED

Gorelenkov, N

Cheng, CZ

Bell, R

Darrow, D

Johnson, D

Kaye, S

LeBlanc, B

Menard, J

Kubota, S

Peebles, W

机构：

[1] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA

[2] Univ Calif Los Angeles, Inst Plasma & Fus Res, Los Angeles, CA 90095 USA

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 87卷 / 14期

关键词：

D O I：

10.1103/PhysRevLett.87.145001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Neutral-beam-driven compressional Alfven eigenmodes at frequencies below the ion cyclotron frequency have been observed and identified for the first time in the National Spherical Torus Experiment. The modes are observed as a broad spectrum of nearly equally spaced peaks in the frequency range from approximate to0.2 omega (ci) to approximate to1.2 omega (ci). The frequency has a scaling with toroidal field and plasma density consistent with Alfven-waves. The modes have been observed with high bandwidth magnetic pickup coils and with a reflectometer.

引用

页码：145001/1 / 145001/4

页数：4

共 14 条

[1] ION-CYCLOTRON EMISSION ON THE TOKAMAK FUSION TEST REACTOR [J].