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Title: Experimental Demonstration of Improved Neoclassical Transport with Quasihelical Symmetry

Abstract

Differences in the electron particle and thermal transport are reported between plasmas produced in a quasihelically symmetric (QHS) magnetic field and a configuration with the symmetry broken. The thermal diffusivity is reduced in the QHS configuration, resulting in higher electron temperatures than in the nonsymmetric configuration for a fixed power input. The density profile in QHS plasmas is centrally peaked, and in the nonsymmetric configuration the core density profile is hollow. The hollow profile is due to neoclassical thermodiffusion, which is reduced in the QHS configuration.

Authors:
; ; ; ; ;  [1]
  1. Department of Electrical and Computer Engineering, University of Wisconsin-Madison, 1415 Engineering Drive, Madison, Wisconsin 53706 (United States)
Publication Date:
OSTI Identifier:
20957684
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 98; Journal Issue: 8; Other Information: DOI: 10.1103/PhysRevLett.98.085002; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CHARGED-PARTICLE TRANSPORT; CONFIGURATION; ELECTRON TEMPERATURE; ELECTRONS; MAGNETIC FIELDS; NEOCLASSICAL TRANSPORT THEORY; PLASMA; POWER INPUT; SYMMETRY; SYMMETRY BREAKING; THERMAL DIFFUSION; THERMAL DIFFUSIVITY

Citation Formats

Canik, J. M., Anderson, D. T., Anderson, F. S. B., Likin, K. M., Talmadge, J. N., and Zhai, K. Experimental Demonstration of Improved Neoclassical Transport with Quasihelical Symmetry. United States: N. p., 2007. Web. doi:10.1103/PHYSREVLETT.98.085002.
Canik, J. M., Anderson, D. T., Anderson, F. S. B., Likin, K. M., Talmadge, J. N., & Zhai, K. Experimental Demonstration of Improved Neoclassical Transport with Quasihelical Symmetry. United States. doi:10.1103/PHYSREVLETT.98.085002.
Canik, J. M., Anderson, D. T., Anderson, F. S. B., Likin, K. M., Talmadge, J. N., and Zhai, K. Fri . "Experimental Demonstration of Improved Neoclassical Transport with Quasihelical Symmetry". United States. doi:10.1103/PHYSREVLETT.98.085002.
@article{osti_20957684,
title = {Experimental Demonstration of Improved Neoclassical Transport with Quasihelical Symmetry},
author = {Canik, J. M. and Anderson, D. T. and Anderson, F. S. B. and Likin, K. M. and Talmadge, J. N. and Zhai, K.},
abstractNote = {Differences in the electron particle and thermal transport are reported between plasmas produced in a quasihelically symmetric (QHS) magnetic field and a configuration with the symmetry broken. The thermal diffusivity is reduced in the QHS configuration, resulting in higher electron temperatures than in the nonsymmetric configuration for a fixed power input. The density profile in QHS plasmas is centrally peaked, and in the nonsymmetric configuration the core density profile is hollow. The hollow profile is due to neoclassical thermodiffusion, which is reduced in the QHS configuration.},
doi = {10.1103/PHYSREVLETT.98.085002},
journal = {Physical Review Letters},
number = 8,
volume = 98,
place = {United States},
year = {Fri Feb 23 00:00:00 EST 2007},
month = {Fri Feb 23 00:00:00 EST 2007}
}