Time-resolved measurements of suprathermal ion transport induced by intermittent plasma blob filaments

A. Bovet, A. Fasoli, I. Furno

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Résumé

Suprathermal ion turbulent transport in magnetized plasmas is generally nondiffusive, ranging from subdiffusive to superdiffusive depending on the interplay of the turbulent structures and the suprathermal ion orbits. Here, we present time-resolved measurements of the cross-field suprathermal ion transport in a toroidal magnetized turbulent plasma. Measurements in the superdiffusive regime are characterized by a higher intermittency than in the subdiffusive regime. Using conditional averaging, we show that, when the transport is superdiffusive, suprathermal ions are transported by intermittent field-elongated turbulent structures that are radially propagating.

langue originaleAnglais
Numéro d'article225001
journalPhysical review letters
Volume113
Numéro de publication22
Les DOIs
Etat de la publicationPublié - 26 nov. 2014
Modification externeOui

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