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Title: Experimental evidence of mode coupling in drift wave intermittent turbulence using a wave number bicoherence analysis

Abstract

Spatiotemporal mode coupling is studied experimentally in a cylindrical plasma device. For that purpose, a bicoherence analysis is applied to spatially resolved measurements of drift wave fluctuations in order to study nonlinear coupling in the wave number spectrum. The use of the k bicoherence is shown to be much more accurate and straightforward than one of the {omega} bicoherence, revealing bicoherence bursts with a characteristic duration shorter than the characteristic period of the signals. It is demonstrated that intermittent structures can be produced during these events.

Authors:
; ; ;  [1]
  1. Max-Planck-Institute for Plasma Physics, EURATOM Association, D-17491 Greifswald (Germany)
Publication Date:
OSTI Identifier:
20860429
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 13; Journal Issue: 12; Other Information: DOI: 10.1063/1.2402131; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; COUPLING; CYLINDRICAL CONFIGURATION; FLUCTUATIONS; LANGMUIR PROBE; NONLINEAR PROBLEMS; PLASMA; PLASMA DRIFT; PLASMA WAVES; THERMONUCLEAR DEVICES; TURBULENCE

Citation Formats

Brochard, F., Windisch, T., Grulke, O., and Klinger, T. Experimental evidence of mode coupling in drift wave intermittent turbulence using a wave number bicoherence analysis. United States: N. p., 2006. Web. doi:10.1063/1.2402131.
Brochard, F., Windisch, T., Grulke, O., & Klinger, T. Experimental evidence of mode coupling in drift wave intermittent turbulence using a wave number bicoherence analysis. United States. doi:10.1063/1.2402131.
Brochard, F., Windisch, T., Grulke, O., and Klinger, T. Fri . "Experimental evidence of mode coupling in drift wave intermittent turbulence using a wave number bicoherence analysis". United States. doi:10.1063/1.2402131.
@article{osti_20860429,
title = {Experimental evidence of mode coupling in drift wave intermittent turbulence using a wave number bicoherence analysis},
author = {Brochard, F. and Windisch, T. and Grulke, O. and Klinger, T.},
abstractNote = {Spatiotemporal mode coupling is studied experimentally in a cylindrical plasma device. For that purpose, a bicoherence analysis is applied to spatially resolved measurements of drift wave fluctuations in order to study nonlinear coupling in the wave number spectrum. The use of the k bicoherence is shown to be much more accurate and straightforward than one of the {omega} bicoherence, revealing bicoherence bursts with a characteristic duration shorter than the characteristic period of the signals. It is demonstrated that intermittent structures can be produced during these events.},
doi = {10.1063/1.2402131},
journal = {Physics of Plasmas},
number = 12,
volume = 13,
place = {United States},
year = {Fri Dec 15 00:00:00 EST 2006},
month = {Fri Dec 15 00:00:00 EST 2006}
}