Temporal behavior of the plasma current distribution in the ASDEX tokamak during lower-hybrid current drive

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2 February 1987

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 58 (5) , 491-494
DOI:10.1103/physrevlett.58.491
PMID:10034952

Abstract

Measurements of the time evolution of the current-density distribution in ASDEX show that lower-hybrid current drive leads to broader profiles, whereby q increases from q≲1 to q>1 in the plasma central region. Simultaneously, the electron temperature is observed to peak, thus demonstrating that the lower-hybrid–driven current distribution is decoupled from the classical conductivity profile.

Keywords

This publication has 3 references indexed in Scilit:

Stabilization of tearing modes in lower hybrid current drive discharges on Petula-B
Nuclear Fusion, 1984
Neoclassical transport of impurities in tokamak plasmas
Nuclear Fusion, 1981
Studies of Internal Disruptions and $m = 1$ Oscillations in Tokamak Discharges with Soft—X-Ray Tecniques
Physical Review Letters, 1974