Heating by an Electron Bernstein Wave in a Spherical Tokamak Plasma via Mode Conversion

Physical Review Letters Volume 96 Issue 18 published_at 2006-05-12
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Title ( eng )
Heating by an Electron Bernstein Wave in a Spherical Tokamak Plasma via Mode Conversion
Creator
Shiraiwa Syunichi
Hanada Kazuaki
Hasegawa Makoto
Idei Hiroshi
Kasahara Hiroshi
Mitarai Osamu
Nakamura Kazuo
Nozato Hideaki
Sakamoto Mizuki
Sasaki Keisuke
Sato Kohnosuke
Takase Yuichi
Yamada Takuma
Zushi Hideki
Source Title
Physical Review Letters
Volume 96
Issue 18
Abstract
The first successful high power heating of a high dielectric constant spherical tokamak plasma by an electron Bernstein wave (EBW) is reported. An EBW was excited by mode conversion (MC) of an X mode cyclotron wave injected from the low magnetic field side of the TST-2 spherical tokamak. Evidence of electron heating was observed as increases in the stored energy and soft x-ray emission. The increased emission was concentrated in the plasma core region. A heating efficiency of over 50% was achieved, when the density gradient in the MC region was sufficiently steep.
Language
eng
Resource Type journal article
Publisher
American Physical Society
Date of Issued 2006-05-12
Rights
Copyright (c) 2006 American Physical Society.
Publish Type Version of Record
Access Rights open access
Source Identifier
[ISSN] 0031-9007
[DOI] 10.1103/PhysRevLett.96.185003
[NCID] AA00773679
[DOI] http://dx.doi.org/10.1103/PhysRevLett.96.185003