Published March 2007 | Version v1
Journal article Metadata-only

Intermittent characteristics in coupling between turbulence and zonal flows

Creators

  • 1. National Institute for Fusion Science, Oroshi-cho, Toki-shi 509-52 (Japan)
  • 2. RIAM, Kyushu University, Kasuga 816-8580 (Japan)
  • 3. Department of Physics, University of California, San Diego, La Jolla, CA 92093-0319 (United States)

Description

An extended application of Gabour's wavelet to bicoherence analysis succeeds in resolving the instantaneous structure of three wave couplings between disparate scale electric field fluctuations in the high temperature core in a toroidal plasma device named the compact helical system. The obtained results quantify an intermittent linkage between turbulence and zonal flows-a highlighted issue in the present plasma research. This is the first demonstration that the intermittent nature of the three wave coupling should underlie the turbulence power modulation due to zonal flows

Additional details

Identifiers

DOI
10.1088/0741-3335/49/3/002;
PII
S0741-3335(07)38701-0;

Publishing Information

Journal Title
Plasma Physics and Controlled Fusion
Journal Volume
49
Journal Issue
3
Journal Page Range
p. 211-217
ISSN
0741-3335
CODEN
PPCFET

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
38069391
Subject category
S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
Descriptors DEI
COUPLING; ELECTRIC FIELDS; ELECTRON TEMPERATURE; FLUCTUATIONS; ION TEMPERATURE; MAGNETIC FIELD CONFIGURATIONS; MODULATION; PLASMA; TOKAMAK DEVICES; TURBULENCE
Descriptors DEC
CLOSED PLASMA DEVICES; THERMONUCLEAR DEVICES; VARIATIONS