Poli, F. M. (Francesca), Ricci, P., Fasoli, A. and Podesta, M. (2008) Transition from drift to interchange instabilities in an open magnetic field line configuration. Physics of Plasmas, Vol.15 (No.3). Article No.032104. doi:10.1063/1.2899303

Research output not available from this repository, contact author.

Request Changes to record.

Abstract

The transition from a regime dominated by drift instabilities to a regime dominated by pure interchange instabilities is investigated and characterized in the simple magnetized toroidal device TORPEX [TORoidal Plasma EXperiment, A. Fasoli et al., Phys. of Plasmas 13, 055906 (2006)]. The magnetic field lines are helical, with a dominant toroidal component and a smaller vertical component. Instabilities with a drift character are observed in the favorable curvature region, on the high field side with respect to the maximum of the background density profile. For a limited range of values of the vertical field they coexist with interchange instabilities in the unfavorable curvature region, on the plasma low field side. With increasing vertical magnetic field magnitude, a gradual transition between the two regimes is observed on the low field side, controlled by the value of the field line connection length. The observed transition follows the predictions of a two-fluid linear model. (C) 2008 American Institute of Physics.

Item Type:	Journal Article
Subjects:	Q Science > QC Physics
Divisions:	Faculty of Science > Physics
Journal or Publication Title:	Physics of Plasmas
Publisher:	American Institute of Physics
ISSN:	1070-664X
Official Date:	March 2008
Dates:	Date Event March 2008 Published
Volume:	Vol.15
Number:	No.3
Number of Pages:	10
Page Range:	Article No.032104
DOI:	10.1063/1.2899303
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access

Data sourced from Thomson Reuters' Web of Knowledge

Request changes or add full text files to a record

Repository staff actions (login required)

View Item