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Titolo:
Doppler-shifted cyclotron absorption of electron Bernstein waves via N-parallel to-upshift in a Tokamak plasma
Autore:
Maekawa, T; Kobayashi, T; Yamaguchi, S; Yoshinaga, K; Igami, H; Uchida, M; Tanaka, H; Asakawa, M; Terumichi, Y;
Indirizzi:
Kyoto Univ, Grad Sch Energy Sci, Kyoto 6068502, Japan Kyoto Univ Kyoto Japan 6068502 Grad Sch Energy Sci, Kyoto 6068502, Japan Kyoto Univ, Dept Phys, Kyoto 6068502, Japan Kyoto Univ Kyoto Japan 6068502 oto Univ, Dept Phys, Kyoto 6068502, Japan
Titolo Testata:
PHYSICAL REVIEW LETTERS
fascicolo: 17, volume: 86, anno: 2001,
pagine: 3783 - 3786
SICI:
0031-9007(20010423)86:17<3783:DCAOEB>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
W7-AS STELLARATOR; CURRENT DRIVE; EMISSION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
9
Recensione:
Indirizzi per estratti:
Indirizzo: Maekawa, T Kyoto Univ, Grad Sch Energy Sci, Kyoto 6068502, Japan Kyoto Univ Kyoto Japan 6068502 ergy Sci, Kyoto 6068502, Japan
Citazione:
T. Maekawa et al., "Doppler-shifted cyclotron absorption of electron Bernstein waves via N-parallel to-upshift in a Tokamak plasma", PHYS REV L, 86(17), 2001, pp. 3783-3786

Abstract

Extraordinary (X) waves are perpendicularly injected for electron Bernstein (B) wave heating into an Ohmically heated plasma from the inboard side inthe WT-3 tokamak. Measurements show that absorption does not take place atthe 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.

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Documento generato il 20/01/20 alle ore 05:09:56