Szepesi, Gabor, Romanelli, M., Militello, F., Peeters, A. G., Camenen, Y., Casson, F. J., Hornsby, W. A., Snodin, A. P. and Wágner, D. (2013) Analysis of lithium driven electron density peaking in FTU liquid lithium limiter experiments. Nuclear Fusion, Volume 53 (Number 3). Article number 033007. doi:10.1088/0029-5515/53/3/033007 ISSN 0029-5515.

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Abstract

The impact of lithium impurities on the microstability and turbulent transport characteristics in the core of a typical FTU liquid lithium limiter (LLL) (Mazzitelli et al 2011 Nucl. Fusion 51 073006) discharge during the density ramp-up phase is studied. A non-linear gyrokinetic analysis performed with GKW (Peeters et al 2009 Comput. Phys. Commun. 180 2650) accompanied by a quasi-linear fluid analysis is presented. We show that a centrally peaked, high concentration lithium profile contributes to the electron peaking by reducing the outward electron flux, and that it leads to inward turbulent deuterium transport through ion flux separation.

Item Type:	Journal Article
Divisions:	Faculty of Science, Engineering and Medicine > Science > Physics
Journal or Publication Title:	Nuclear Fusion
Publisher:	Institute of Physics Publishing Ltd.
ISSN:	0029-5515
Official Date:	13 February 2013
Dates:	Date Event 13 February 2013 Published
Volume:	Volume 53
Number:	Number 3
Page Range:	Article number 033007
DOI:	10.1088/0029-5515/53/3/033007
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access

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