Oscillating magnetic field current drive in a spherical plasma device

Xu, S., Luo, W., Ostrikov, K., Ahn, J., & Lee, S. (2000) Oscillating magnetic field current drive in a spherical plasma device. Plasma Physics and Controlled Fusion, 42(7), pp. 807-821.

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Abstract

The continuous steady-state current drive in a spherical argon plasma by transverse oscillating magnetic field (OMF) is investigated. The experimental results reveal that a rotating magnetic field is generated, and its amplitude depends linearly on the external steady vertical magnetic field. It has been shown that steady toroidal currents of up to about 400 A can be driven by a 490 kHz OMF with an input power of 1.4 kW. The generation of steady toroidal magnetic fields directed oppositely in the upper and lower hemispheres have been recorded. The measurements of time-varying magnetic fields unveil a strong nonlinear effect of the frequency-doubled field harmonics generation. The electron number density and temperature of up to 6.2×1018 m-3 and 12 eV have been obtained. The observed effects validate the existing theory of the OMF current drive in spherical plasmas.

Impact and interest:

2 citations in Scopus
3 citations in Web of Science®
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ID Code: 74201
Item Type: Journal Article
Refereed: Yes
Additional URLs:
DOI: 10.1088/0741-3335/42/7/305
ISSN: 0741-3335
Divisions: Current > QUT Faculties and Divisions > Science & Engineering Faculty
Deposited On: 21 Jul 2014 05:13
Last Modified: 22 Jun 2017 02:01

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