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Frequency and plasma condition dependent spatial structure of low frequency global potential oscillations in the TJ-II stellarator.
- Source :
- Nuclear Fusion; Apr2019, Vol. 59 Issue 4, p1-1, 1p
- Publication Year :
- 2019
-
Abstract
- In this letter, we investigate the spatial structure of a low frequency global potential oscillation, which is likely ascribed as the low frequency zonal flows, in TJ-II laboratory plasmas. In two plasmas produced by different heating schemes (electron cyclotron resonance heating and neutral beam injection heating) and characterized by different mean radial electric field structures, frequency-space-decomposed spectra of the global potential oscillation are obtained. In both cases, the oscillatory field has a single-peaked potential structure and a dipole radial electric field structure. The oscillating structure depends on its frequency as well as on the heating scheme. [ABSTRACT FROM AUTHOR]
- Subjects :
- PLASMA beam injection heating
NEUTRAL beams
ELECTRON cyclotron resonance heating
Subjects
Details
- Language :
- English
- ISSN :
- 00295515
- Volume :
- 59
- Issue :
- 4
- Database :
- Complementary Index
- Journal :
- Nuclear Fusion
- Publication Type :
- Academic Journal
- Accession number :
- 135369930
- Full Text :
- https://doi.org/10.1088/1741-4326/ab0122