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research article

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

Bovet, Alexandre
•
Fasoli, Ambrogio
•
Furno, Ivo
2014
Physical Review Letters

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.

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PhysRevLett.113.225001.pdf

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http://purl.org/coar/version/c_970fb48d4fbd8a85

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