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

Suprathermal ion turbulent transport in magnetized plasmas is generally non-diffusive, 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.


Published in:
Physical Review Letters, 113, 22, 225001
Year:
2014
Publisher:
American Physical Society
ISSN:
0031-9007
Laboratories:
SPC
CRPP




 Record created 2014-10-29, last modified 2018-09-13

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