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Abstract

The marfe is studied as a radiative thermal instability in a 2-dimensional (2D) axisymmetric tokamak model. In order to get a detailed idea of the marfe onset, a linear analysis is performed, using a full set of magnetohydrodynamic (MHD) equations. Some typical marfe shots from JET are simulated. It is demonstrated how the marfe is a result of the poloidally symmetric temperature decrease and asymmetric density increase. It is found that the onset of the marfe is accompanied by significant perturbations of pressure and magnetic field. The evolution of the marfe is discussed based on the linear results.

Additional information

Authors: VAN DEN LINDEN R A M, JET Joint Undertaking, Abingdon, Oxon (GB);HUYSMANS G T A, JET Joint Undertaking, Abingdon, Oxon (GB);KERNER W, JET Joint Undertaking, Abingdon, Oxon (GB);DE PLOEY A, Katholieke Universiteit Leuven, Centrum voor Plasma-Astrofysica (BE);GOOSSENS M, Katholieke Universiteit Leuven, Centrum voor Plasma-Astrofysica (BE);GOEDBLOED J P, FOM-Instituut voor Plasmafysica, Nieuwegein (NL)
Bibliographic Reference: Report: JET-P(96)49 EN (1996) 18pp.
Availability: Available from the Publications Officer, JET Joint Undertaking Abingdon, Oxon, OX14 3EA (GB)
Record Number: 199710193 / Last updated on: 1997-04-01
Category: PUBLICATION
Original language: en
Available languages: en