Experimental evidence for electron temperature fluctuations in the core plasma of the W7-AS stellarator
- 31 January 1994
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 72 (5) , 653-656
- https://doi.org/10.1103/physrevlett.72.653
Abstract
Correlation radiometry has been applied to detect for the first time electron temperature fluctuations in the core of a magnetically confined plasma by means of electron cyclotron emission. Broadband fluctuations are observed in the frequency range up to 150 kHz with levels below 1.4%. Apparent temperature fluctuations due to the finite optical depth are subtracted; the remaining electron temperature fluctuation level is significant. On the basis of reasonable considerations, the results indicate that electron temperature fluctuations can contribute to the anomalous electron heat flux.Keywords
This publication has 9 references indexed in Scilit:
- Intensity interferometry for measurement of electron temperature fluctuations in fusion plasmasPlasma Physics and Controlled Fusion, 1993
- Thermal, nonthermal, and stimulated fluctuations of tokamak electron cyclotron radiationReview of Scientific Instruments, 1992
- Electron temperature fluctuation measurement from ECE on TEXT-UReview of Scientific Instruments, 1992
- Confinement studies on the Wendelstein VII-AS stellaratorPlasma Physics and Controlled Fusion, 1990
- Temperature fluctuations and heat transport in the edge regions of a tokamakPhysics of Fluids, 1986
- Fast multichannel heterodyne radiometer for electron cyclotron emission measurement on stellarator W VII-AReview of Scientific Instruments, 1985
- Measurements of microturbulence in tokamaks and comparisons with theories of turbulence and anomalous transportNuclear Fusion, 1985
- Measurement of apparent turbulent temperature fluctuations on the TFR TokamakPlasma Physics, 1981
- LXXIV. A new type of interferometer for use in radio astronomyJournal of Computers in Education, 1954