Published March 28, 2003
| Version v1
Journal article
Turbulent transport reduction and randomization of coherent fluctuations by zonal flows in toroidal plasma
Creators
- 1. Plasma Research Laboratory, Research School of Physical Sciences and Engineering, Australian National University, Canberra ACT 0200 (Australia)
Description
Fluctuation-driven particle flux is greatly reduced in the plasma radial region where zonal flows are present in the H-1 toroidal heliac. This occurs without reduction in the fluctuation level. Statistical properties of fluctuations are significantly modified in this region. It is shown that the randomization of phases of coherent structures by zonal flows is responsible for the observed effect. This mechanism of transport reduction complements theoretically predicted random shearing of turbulence by zonal flows and does not require the fluctuations suppression
Additional details
Identifiers
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 90
- Journal Issue
- 12
- Journal Page Range
- p. 125002-125002.4
- ISSN
- 0031-9007
- CODEN
- PRLTAO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 35041391
- Subject category
- S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
- Descriptors DEI
- HELIAC STELLARATORS; PLASMA; PLASMA CONFINEMENT; PLASMA WAVES; TOROIDAL CONFIGURATION; TURBULENCE; WAVE PROPAGATION
- Descriptors DEC
- ANNULAR SPACE; CLOSED CONFIGURATIONS; CLOSED PLASMA DEVICES; CONFIGURATION; CONFINEMENT; MAGNETIC FIELD CONFIGURATIONS; SPACE; STELLARATORS; THERMONUCLEAR DEVICES
Optional Information
- Notes
- (c) 2003 The American Physical Society