Time-Resolved Measurements of Suprathermal Ion Transport Induced by Intermittent Plasma Blob Filaments

被引：13
作者：
Bovet, A. [1 ]
Fasoli, A. [1 ]
Furno, I. [1 ]
机构：
[1] Ecole Polytech Fed Lausanne, CRPP, CH-1015 Lausanne, Switzerland
来源：
PHYSICAL REVIEW LETTERS | 2014年 / 113卷 / 22期
基金：
瑞士国家科学基金会;
关键词：
Plasma turbulence;
D O I：
10.1103/PhysRevLett.113.225001
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
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.
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页数：5
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