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Title: Plasma rotation and rf heating in DIII-D

Abstract

In a variety of discharge conditions on DIII-D it is observed that rf electron heating reduces the toroidal rotation speed and core ion temperature. The rf heating can be with either fast wave or electron cyclotron heating and this effect is insensitive to the details of the launched toroidal wavenumber spectrum. To date all target discharges have rotation first established with co-directed neutral beam injection. A possible cause is enhanced ion momentum and thermal diffusivity due to electron heating effectively creating greater anomalous viscosity. Another is that a counter directed toroidal force is applied to the bulk plasma via rf driven radial current.

Authors:
; ; ; ; ; ; ;  [1];  [2];  [3]
  1. General Atomics, P.O. Box 85608, San Diego, California 92186-5698 (United States)
  2. University of California, Irvine, California 992697 (United States)
  3. Lawrence Livermore National Laboratory, Livermore, California 94551 (United States)
Publication Date:
OSTI Identifier:
21210439
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 485; Journal Issue: 1; Conference: 13. topical conference on radio frequency power in plasmas, Annapolis, MD (United States), 12-14 Apr 1999; Other Information: DOI: 10.1063/1.59722; (c) 1999 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; BEAM INJECTION HEATING; DOUBLET-3 DEVICE; ECR HEATING; ELECTRON TEMPERATURE; ELECTRONS; ION TEMPERATURE; NEUTRAL ATOM BEAM INJECTION; PLASMA; PLASMA INSTABILITY; RF SYSTEMS; ROTATION; THERMAL DIFFUSIVITY; VISCOSITY

Citation Formats

DeGrassie, J. S., Baker, D. R., Burrell, K. H., Greenfield, C. M., Lin-Liu, Y. R., Luce, T. C., Petty, C. C., Prater, R., Heidbrink, W. W., and Rice, B. W. Plasma rotation and rf heating in DIII-D. United States: N. p., 1999. Web. doi:10.1063/1.59722.
DeGrassie, J. S., Baker, D. R., Burrell, K. H., Greenfield, C. M., Lin-Liu, Y. R., Luce, T. C., Petty, C. C., Prater, R., Heidbrink, W. W., & Rice, B. W. Plasma rotation and rf heating in DIII-D. United States. doi:10.1063/1.59722.
DeGrassie, J. S., Baker, D. R., Burrell, K. H., Greenfield, C. M., Lin-Liu, Y. R., Luce, T. C., Petty, C. C., Prater, R., Heidbrink, W. W., and Rice, B. W. Mon . "Plasma rotation and rf heating in DIII-D". United States. doi:10.1063/1.59722.
@article{osti_21210439,
title = {Plasma rotation and rf heating in DIII-D},
author = {DeGrassie, J. S. and Baker, D. R. and Burrell, K. H. and Greenfield, C. M. and Lin-Liu, Y. R. and Luce, T. C. and Petty, C. C. and Prater, R. and Heidbrink, W. W. and Rice, B. W.},
abstractNote = {In a variety of discharge conditions on DIII-D it is observed that rf electron heating reduces the toroidal rotation speed and core ion temperature. The rf heating can be with either fast wave or electron cyclotron heating and this effect is insensitive to the details of the launched toroidal wavenumber spectrum. To date all target discharges have rotation first established with co-directed neutral beam injection. A possible cause is enhanced ion momentum and thermal diffusivity due to electron heating effectively creating greater anomalous viscosity. Another is that a counter directed toroidal force is applied to the bulk plasma via rf driven radial current.},
doi = {10.1063/1.59722},
journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 485,
place = {United States},
year = {1999},
month = {9}
}