BOOTSTRAP CURRENT GENERATION BY SYMMETRICALLY INJECTED LOWER-HYBRID WAVES IN A TOKAMAK PLASMA

Authors
SQUIRE JP PORKOLAB M COLBORN JA VILLASENOR J
Citation
Jp. Squire et al., BOOTSTRAP CURRENT GENERATION BY SYMMETRICALLY INJECTED LOWER-HYBRID WAVES IN A TOKAMAK PLASMA, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 50(1), 1994, pp. 513-518
Citations number
16
Categorie Soggetti
Physycs, Mathematical","Phsycs, Fluid & Plasmas
Journal title
Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics → ACNP
ISSN journal
1063651X
Volume
50
Issue
1
Year of publication
1994
Pages
513 - 518
Database
ISI
SICI code
1063-651X(1994)50:1<513:BCGBSI>2.0.ZU;2-W
Abstract
High poloidal beta (epsilonbeta(p) approximately 1) plasma equilibria produced by injection of lower-hybrid waves with symmetric spectra (DE LTAphi=pi phasing of waveguides) show evidence of substantial non-Ohmi c current generation (zero loop voltage). X-ray data indicate that, wh ile up to 30% of the current may be carried by a highly anisotropic el ectron tail (epsilon > 30 keV), the bootstrap current generated by an enhanced population of intermediate energy electrons (c congruent-to 1 0 keV) could account for the remaining 70% of the current.