Doppler-shifted cyclotron absorption of electron Bernstein waves via N∥-upshift in a Tokamak plasma

被引：43
|
作者：
Maekawa, T [1 ]
Kobayashi, T
Yamaguchi, S
Yoshinaga, K
Igami, H
Uchida, M
Tanaka, H
Asakawa, M
Terumichi, Y
机构：
[1] Kyoto Univ, Grad Sch Energy Sci, Kyoto 6068502, Japan
[2] Kyoto Univ, Dept Phys, Kyoto 6068502, Japan
来源：
PHYSICAL REVIEW LETTERS | 2001年 / 86卷 / 17期
关键词：
D O I：
10.1103/PhysRevLett.86.3783
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Extraordinary (X) waves are perpendicularly injected for electron Bernstein (B) wave heating into an Ohmically heated plasma from the inboard side in the WT-3 tokamak. Measurements show that absorption does not take place at the electron cyclotron resonance layer nor the upper hybrid resonance layer, but does happen midway between them. This is consistent with the ray tracing prediction, i.e., the poloidal field and poloidal inhomogeneity of toroidal field lead the B waves to have a large parallel refractive index N-parallel to (>1), and the B waves are damped away via the Doppler-shifted cyclotron resonance.
引用
收藏
页码：3783 / 3786
页数：4
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