Electron heating by ion Bernstein wave in the HT-7 tokamak

Citation
Yp. Zhao et al., Electron heating by ion Bernstein wave in the HT-7 tokamak, PLASMA PHYS, 43(3), 2001, pp. 343-353
Citations number
16
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PLASMA PHYSICS AND CONTROLLED FUSION
ISSN journal
0741-3335 → ACNP
Volume
43
Issue
3
Year of publication
2001
Pages
343 - 353
Database
ISI
SICI code
0741-3335(200103)43:3<343:EHBIBW>2.0.ZU;2-K
Abstract
Ion Bernstein wave (IBW) heating has been investigated in the HT-7 supercon ducting tokamak. Electron heating mode was concentrated on deuterium plasma with an injecting power to 320 kW. The bulk electron temperature showed a significant rise with a heating factor, DeltaT(e) x n(e)/P-RF, up to 9.4 eV x 10(13) cm(-3) kW(-1). The direct electron heating via electron Landau da mping from IBW has been demonstrated after intensive RF wall conditioning. Both on-axis and off-axis electron heating were obtained. Electron temperat ure profile was modified by IBW under different plasma conditions. Edge den sity showed no sharp drop during IBW heating. Plasma density and temperatur e remained almost unchanged in front of antenna. But edge temperature and d ensity inside of plasma visibly increased and their profiles became steeper . Particle confinement improvement was observed by IBW.