Experimental studies on the mechanism for the spin-up of poloidal rotation in ergodic plasmas at the tokamak TEXTOR

C. Busch, M. De Bock, K. H. Finken, M. V. Hellermann, S. Jachmich, M. Jakubowski, M. Lehnen, U. Samm, B. Schweer, B. Unterberg

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Plasma rotation and the radial electric field have been investigated under influence of magnetic perturbations imposed by the Dynamic Ergodic Divertor in TEXTOR. In the stochastic edge plasma the poloidal rotation changes from electron to ion diamagnetic drift direction and the toroidal rotation increases into co-current direction. These variations are governed by the strength of the magnetic perturbation rather than by its rotation. The radial electric field becomes positive here. The changes of rotation and electric field can be reproduced in a simple model for the rotation with a torque produced by a transverse current in the stochastic layer.

Original languageEnglish
Title of host publication33rd EPS Conference on Plasma Physics 2006, EPS 2006 - Europhysics Conference Abstracts
Pages1179-1182
Number of pages4
Publication statusPublished - 2006
Event33rd European Physical Society Conference on Plasma Physics 2006, EPS 2006 - Rome, Italy
Duration: 19 Jun 200623 Jun 2006

Publication series

Name33rd EPS Conference on Plasma Physics 2006, EPS 2006
Volume2

Conference

Conference33rd European Physical Society Conference on Plasma Physics 2006, EPS 2006
Country/TerritoryItaly
CityRome
Period19/06/0623/06/06

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