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Title: Intrinsic rotation and electric field shear

Abstract

A novel mechanism for the generation and amplification of intrinsic rotation at the low-mode to high-mode transition is presented. The mechanism is one where the net parallel flow is accelerated by turbulence. A preferential direction of acceleration results from the breaking of k{sub parallel}{yields}-k{sub parallel} symmetry by sheared ExB flow. It is shown that the equilibrium pressure gradient contributes a piece of the parallel Reynolds stress, which is nonzero for vanishing parallel flow, and so can accelerate the plasma, driving net intrinsic rotation. Rotation drive, transport, and fluctuation dynamics are treated self-consistently.

Authors:
; ; ;  [1];  [2];  [3]
  1. Center for Astrophysics and Space Sciences, University of California, San Diego, La Jolla, California 92093-0424 (United States)
  2. (United States)
  3. (India)
Publication Date:
OSTI Identifier:
20974927
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 14; Journal Issue: 4; Other Information: DOI: 10.1063/1.2717891; (c) 2007 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; ACCELERATION; AMPLIFICATION; ELECTRIC FIELDS; ELECTROMAGNETIC FIELDS; EQUILIBRIUM; PLASMA PRESSURE; PRESSURE GRADIENTS; REYNOLDS NUMBER; ROTATING PLASMA; SHEAR; STRESSES; TURBULENCE

Citation Formats

Guercan, Oe. D., Diamond, P. H., Hahm, T. S., Singh, R., Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543-0451, and Institute for Plasma Research, Bhat, Gandhinagar-382 428. Intrinsic rotation and electric field shear. United States: N. p., 2007. Web. doi:10.1063/1.2717891.
Guercan, Oe. D., Diamond, P. H., Hahm, T. S., Singh, R., Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543-0451, & Institute for Plasma Research, Bhat, Gandhinagar-382 428. Intrinsic rotation and electric field shear. United States. doi:10.1063/1.2717891.
Guercan, Oe. D., Diamond, P. H., Hahm, T. S., Singh, R., Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543-0451, and Institute for Plasma Research, Bhat, Gandhinagar-382 428. Sun . "Intrinsic rotation and electric field shear". United States. doi:10.1063/1.2717891.
@article{osti_20974927,
title = {Intrinsic rotation and electric field shear},
author = {Guercan, Oe. D. and Diamond, P. H. and Hahm, T. S. and Singh, R. and Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543-0451 and Institute for Plasma Research, Bhat, Gandhinagar-382 428},
abstractNote = {A novel mechanism for the generation and amplification of intrinsic rotation at the low-mode to high-mode transition is presented. The mechanism is one where the net parallel flow is accelerated by turbulence. A preferential direction of acceleration results from the breaking of k{sub parallel}{yields}-k{sub parallel} symmetry by sheared ExB flow. It is shown that the equilibrium pressure gradient contributes a piece of the parallel Reynolds stress, which is nonzero for vanishing parallel flow, and so can accelerate the plasma, driving net intrinsic rotation. Rotation drive, transport, and fluctuation dynamics are treated self-consistently.},
doi = {10.1063/1.2717891},
journal = {Physics of Plasmas},
number = 4,
volume = 14,
place = {United States},
year = {Sun Apr 15 00:00:00 EDT 2007},
month = {Sun Apr 15 00:00:00 EDT 2007}
}