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Title: Drift Mode Calculations in Nonaxisymmetric Geometry

A fully kinetic assessment of the stability properties of toroidal drift modes has been obtained for nonaxisymmetric (stellarator) geometry, in the electrostatic limit. This calculation is a comprehensive solution of the linearized gyrokinetic equation, using the lowest-order ''ballooning representation'' for high toroidal mode number instabilities, with a model collision operator. Results for toroidal drift waves destabilized by temperature gradients and/or trapped particle dynamics are presented, using three-dimensional magnetohydrodynamic equilibria generated as part of a design effort for a quasiaxisymmetric stellarator. Comparisons of these results with those obtained for typical tokamak cases indicate that the basic trends are similar.
Authors:
; ; ;
Publication Date:
OSTI Identifier:
9115
Report Number(s):
PPPL-3354; DE-AC02-76CHO3073
DE-AC02-76CHO3073; TRN: US0102749
DOE Contract Number:
AC02-76CH03073
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 1 Jul 1999
Research Org:
Princeton Plasma Physics Lab., NJ (US)
Sponsoring Org:
USDOE Office of Energy Research (ER) (US)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; STELLARATORS; DRIFT INSTABILITY; DESIGN; ELECTROSTATICS; GEOMETRY; KINETICS; MAGNETOHYDRODYNAMICS; THREE-DIMENSIONAL CALCULATIONS