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Geometrical Effects in Plasma Stability and Dynamics of Coherent Structures in the Divertor
Author(s) -
Ryutov D. D.,
Cohen R. H.
Publication year - 2008
Publication title -
contributions to plasma physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.531
H-Index - 47
eISSN - 1521-3986
pISSN - 0863-1042
DOI - 10.1002/ctpp.200810008
Subject(s) - divertor , plasma , physics , ballooning , resistive touchscreen , tilt (camera) , magnetic field , mechanics , shear (geology) , instability , stability (learning theory) , atomic physics , tokamak , materials science , geometry , nuclear physics , mathematics , quantum mechanics , machine learning , computer science , electrical engineering , composite material , engineering
The effects of the strong X‐point magnetic shear, of the orientation of the divertor legs with respect to the major axis, and of the tilt of the divertor plates with respect to the poloidal field on plasma dynamics in the divertor region have been studied. The linear stability analysis of flute and resistive ballooning modes is presented for the X‐point geometry, with emphasis on the private flux region. The dynamics of isolated plasma filaments (“blobs”) passing near the X point is described. In both cases the correct accounting for the geometry turns out to be critically important. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)