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Title: Statistical characterization of fluctuation wave forms in the boundary region of fusion and nonfusion plasmas

Abstract

The statistical properties of plasma fluctuations have been investigated in the plasma boundary region of fusion (tokamaks and stellarators) and nonfusion plasmas. Fluctuations in ion saturation current and floating potential have a near-Gaussian character in the proximity of the velocity shear layer (r{sub sh}). However, fluctuations deviate from a Gaussian distribution when moving inside of the plasma edge (r<r{sub sh}) or into the scrape-off layer region (r>r{sub sh}). Furthermore, fluctuations show sporadic pulses that are asymmetric in time. The present analysis shows a coupling of those pulses and the averaged flow in the shear layer region. (c) 2000 American Institute of Physics.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [2];  [2];  [3]
  1. Asociacion Euratom-Ciemat, 28040 Madrid, (Spain)
  2. Universita' degli Studi di Milano-Bicocca and INFM, 20126 Milano, (Italy)
  3. IPP Garching, EURATOM Association, 85740 Garching, (Germany) (and others)
Publication Date:
OSTI Identifier:
20216030
Resource Type:
Journal Article
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 7; Journal Issue: 5; Other Information: PBD: May 2000; Journal ID: ISSN 1070-664X
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; PLASMA WAVES; FLUCTUATIONS; STATISTICS; TOKAMAK DEVICES; STELLARATORS; GAUSS FUNCTION; BOUNDARY LAYERS; THEORETICAL DATA

Citation Formats

Sanchez, E., Hidalgo, C., Lopez-Bruna, D., Garcia-Cortes, I., Balbin, R., Pedrosa, M. A., Milligen, B. van, Riccardi, C., Chiodini, G., and Bleuel, J. Statistical characterization of fluctuation wave forms in the boundary region of fusion and nonfusion plasmas. United States: N. p., 2000. Web. doi:10.1063/1.873958.
Sanchez, E., Hidalgo, C., Lopez-Bruna, D., Garcia-Cortes, I., Balbin, R., Pedrosa, M. A., Milligen, B. van, Riccardi, C., Chiodini, G., & Bleuel, J. Statistical characterization of fluctuation wave forms in the boundary region of fusion and nonfusion plasmas. United States. doi:10.1063/1.873958.
Sanchez, E., Hidalgo, C., Lopez-Bruna, D., Garcia-Cortes, I., Balbin, R., Pedrosa, M. A., Milligen, B. van, Riccardi, C., Chiodini, G., and Bleuel, J. Mon . "Statistical characterization of fluctuation wave forms in the boundary region of fusion and nonfusion plasmas". United States. doi:10.1063/1.873958.
@article{osti_20216030,
title = {Statistical characterization of fluctuation wave forms in the boundary region of fusion and nonfusion plasmas},
author = {Sanchez, E. and Hidalgo, C. and Lopez-Bruna, D. and Garcia-Cortes, I. and Balbin, R. and Pedrosa, M. A. and Milligen, B. van and Riccardi, C. and Chiodini, G. and Bleuel, J.},
abstractNote = {The statistical properties of plasma fluctuations have been investigated in the plasma boundary region of fusion (tokamaks and stellarators) and nonfusion plasmas. Fluctuations in ion saturation current and floating potential have a near-Gaussian character in the proximity of the velocity shear layer (r{sub sh}). However, fluctuations deviate from a Gaussian distribution when moving inside of the plasma edge (r<r{sub sh}) or into the scrape-off layer region (r>r{sub sh}). Furthermore, fluctuations show sporadic pulses that are asymmetric in time. The present analysis shows a coupling of those pulses and the averaged flow in the shear layer region. (c) 2000 American Institute of Physics.},
doi = {10.1063/1.873958},
journal = {Physics of Plasmas},
issn = {1070-664X},
number = 5,
volume = 7,
place = {United States},
year = {2000},
month = {5}
}