Hornsby, W. A., Siccinio, M., Peeters, A. G., Poli, E., Snodin, A. P., Casson, F. J. (Francis James), Camenen, Y. and Szepesi, G.. (2011) Interaction of turbulence with magnetic islands : effect on bootstrap current. Plasma Physics and Controlled Fusion, Vol.53 (No.5). article no. 054008. ISSN 0741-3335

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Abstract

A finite radial temperature gradient has been observed to be maintained within magnetic islands in gyro-kinetic turbulence simulations despite the fast motion along the field, and is related to the trapped particles which do not move along the field around the island. Recent calculations of the interaction of drift-wave turbulence with magnetic islands have shown that turbulence can exist within the separatrix, which in turn allows only the partial flattening of electron temperature profiles. Here we calculate, using a minimal drift-kinetic model, the effect on the bootstrap current in a tokamak. Consequences for the stability of the neoclassical tearing mode are discussed.

Item Type:	Journal Article
Divisions:	Faculty of Science > Physics
Journal or Publication Title:	Plasma Physics and Controlled Fusion
Publisher:	Institute of Physics Publishing Ltd.
ISSN:	0741-3335
Date:	2011
Volume:	Vol.53
Number:	No.5
Page Range:	article no. 054008
Identification Number:	10.1088/0741-3335/53/5/054008
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
URI:	http://wrap.warwick.ac.uk/id/eprint/41755

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