Hollow Density Profile on Electron Cyclotron Resonance Heating JFT-2M Plasma

The first hollow electron density profile in the central region on the JAERI Fusion Torus-2M (JFT-2M) is measured during electron cyclotron resonance heating (ECRH) with a TV Thomson scattering system (TVTS). The peripheral region is not hollow but is accumulated due to pump-out from the central reg...

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Bibliographic Details
Published in:Japanese Journal of Applied Physics 1998-10, Vol.37 (10R), p.5735, Article 5735
Main Authors: Yamauchi, Toshihiko, Hoshino, Katsumichi, Kawashima, Hisato, Ogawa, Toshihide, Kawakami, Tomohide, Shiina, Tomio, Ishige, Youichi
Format: Article
Language:English
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Summary:The first hollow electron density profile in the central region on the JAERI Fusion Torus-2M (JFT-2M) is measured during electron cyclotron resonance heating (ECRH) with a TV Thomson scattering system (TVTS). The peripheral region is not hollow but is accumulated due to pump-out from the central region. The hollowness increases with time but is saturated at ∼40 ms and maintains a constant hollow ratio. The hollowness is strongly related to the steep temperature gradient of the heated zone.
ISSN:0021-4922
1347-4065
DOI:10.1143/JJAP.37.5735