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A mechanism is proposed to explain how the sawtooth precursor, a transient macroscopic tearing mode, can trigger the sawtooth collapse. The physical model and scaling considerations are described. The terms of equations describing the background and fluctuations involved are then ordered and their consequences are obtained and discussed. The continuity and first order parallel momentum equations, which describe the evolution of the background owing to the anomalous fluxes, are solved analytically, enphasising the physical interpretation of the solution. The paper concludes with a comparison with other collapse models.

Additional information

Authors: ROGISTER A, Forschungszentrum Jülich GmbH (KFA) (DE);LI D, Forschungszentrum Jülich GmbH (KFA) (DE)
Bibliographic Reference: Report: ISSN 0944-2952 EN (1993) 45 pp.
Availability: Available from Zentralbibliothek der Forschungszentrum Jülich GmbH, Postfach 1913, 5170 Jülich (DE)
Record Number: 199311515 / Last updated on: 1994-11-28
Original language: en
Available languages: en