Community Research and Development Information Service - CORDIS

Abstract

WITH A VIEW TO PROVIDING A THEORETICAL BASIS FOR THE INTERPRETATION OF EXPERIMENTAL OBSERVATIONS OF MAGNETIC FIELD FLUCTUATIONS, THE LINEAR STABILITY OF MICROTEARING MODES ARE CALCULATED FOR ASDEX PLASMAS. TOKAMAK PROFILES CALCULATED BY THE BALOUR CODE FOR DISCHARGES IN THE O, L AND H REGIME ARE CONSIDERED. THE THEORY OF MICROTEARING MODES IN ONE ION AND TWO ION SPECIES PLASMA AND THE CALCULATION OF THE PARALLEL ELECTRON CONDUCTIVITY FROM THE FOKKER-PLANK EQUATION ARE OUTLINED. THE SOLUTION OF THE COUPLED SECOND ORDER EIGEN MODE EQUATION IS PRESENTED AS AN ALGORITHM. A COMPARISON OF THE RESULTING EIGEN VALUES WITH THOSE PUBLISHED IN THE LITERATURE FOR STANDARD CONDITIONS SHOWS THAT THE CODING OF THE ALGORITHM HAS BEEN SUCCESSFULLY PERFORMED. THE STABILITY OF MICROTEAMING MODES ARE CALCULATED FOR ASDEX DISCHARGES IN THE O, L AND H REGIMES. THE RELEVANCE OF THESE CALCULATIONS TO RECENT EXPERIMENTS CONCERNED WITH BROADBAND MAGNETIC FLUCTUATIONS IN TOKAMAKS IS DISCUSSED. FOR OHMIC DISCHARGES UNSTABLE MODES ARE PREDICTED TO BE LOCATED TOWARDS THE CENTRE OF THE PLASMA.

Additional information

Authors: GIANNONE L MAX-PLANCK-INSTITUT FUER PLASMAPHYSIK, MUENCHEN, D, MAX-PLANCK-INSTITUT FUER PLASMAPHYSIK, MUENCHEN, D
Bibliographic Reference: REPORT IPP-III/125, 1987, AVAILABILITY: MAX-PLANCK-INSTITUT, 8046-GARCHING BEI MUENCHEN, D III/125, 1987
Follow us on: RSS Facebook Twitter YouTube Managed by the EU Publications Office Top