Radial convection of plasma structures in a turbulent rotating magnetized-plasma column.
The turbulent regime of a rotating magnetized plasma column has been studied. The detection and the spatiotemporal analysis of structures by means of conditional sampling techniques is performed. Because of the overall rotation and centrifugal effects, the structures inside the turbulence move on average along a spiral trajectory leading to a net radial convection of the charged particles to the walls. The development of a poloidal electric field inside the structures has been measured. It leads to the observed outwards radial E x B drift in agreement with the expectations of recent theoretical works.
Laboratoire PIIM, UMR 6633 CNRS, Université de Provence, 13397 Marseille CEDEX 20, France.
Th
T
Pierre
A
A
Escarguel
D
D
Guyomarc'h
R
R
Barni
C
C
Riccardi