E Martines et al 2009 Plasma Phys. Control. Fusion 51 124053 doi:10.1088/0741-3335/51/12/124053
E Martines1, N Vianello1, D Sundkvist2, M Spolaore1, M Zuin1, M Agostini1, V Antoni1, R Cavazzana1, C Ionita3, M Maraschek4, F Mehlmann3, H W Müller4, V Naulin5, J J Rasmussen5, V Rohde4, P Scarin1, R Schrittwieser3, G Serianni1, E Spada1, the RFX-mod team and the ASDEX Upgrade team
Show affiliationsDirect measurements of current density perturbations associated with non-linear phenomena in magnetized plasmas can be carried out using in situ magnetic measurements. In this paper we report such measurements for three different kinds of phenomena. Current density fluctuations in the edge density gradient region of a fusion plasma confined in reversed field pinch configuration and in a density gradient region in the Earth magnetosphere are measured and compared, showing that in both environments they can be attributed to drift-Alfvén vortices. Current structures associated with reconnection events measured in a reversed field pinch plasma and in the magnetosheath are detected and compared. Evidence of current filaments occurring during ELMs in an H-mode tokamak plasma is displayed.
Issue 12 (December 2009)
Received 19 June 2009, in final form 20 July 2009
Published 12 November 2009
E Martines et al 2009 Plasma Phys. Control. Fusion 51 124053
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