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Observation of Long-Distance Radial Correlation in Toroidal Plasma Turbulence.
- Source :
-
Physical Review Letters . 9/9/2011, Vol. 107 Issue 11, p115001.1-115001.5. 5p. - Publication Year :
- 2011
-
Abstract
- This Letter presents the discovery of macroscale electron temperature fluctuations with a long radial correlation length comparable to the plasma minor radius in a toroidal plasma. Their spatiotemporal structure is characterized by a low frequency of ∼1-3 kHz, ballistic radial propagation, a poloidal or toroidal mode number of m/n=1/1 (or 2/1), and an amplitude of ∼2% at maximum. Nonlinear coupling between the long-range fluctuations and the microscopic fluctuations is identified. A change of the amplitude of the long-range fluctuation is transmitted across the plasma radius at the velocity which is of the order of the drift velocity. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00319007
- Volume :
- 107
- Issue :
- 11
- Database :
- Academic Search Index
- Journal :
- Physical Review Letters
- Publication Type :
- Academic Journal
- Accession number :
- 67304556
- Full Text :
- https://doi.org/10.1103/PhysRevLett.107.115001