Open AccessDOUBLE TEARING MODE IN PLASMA WITH MAGNETIC BRAIDING
Author(s) -
J. Q. Dong
Publication year - 1984
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.33.1341
Subject(s) - scaling , physics , tearing , mode (computer interface) , plasma , dispersion relation , magnetohydrodynamics , space (punctuation) , scale (ratio) , electron , dispersion (optics) , condensed matter physics , quantum mechanics , thermodynamics , mathematics , computer science , geometry , operating system
The linear behavior of the double tearing mode driven by anomolous electron viscosity effects associated with magnetic braiding is investigated within the framework of MHD. A two-space-scale analysis is performed and the result is used to obtain an approximate dispersion relation for the mode. If the seperation of the rational surfaces at x =±xs is sufficiently small, xs/ αyα)-11/15R-1/15, the growth rate is predicted to scale as R-1/15. With increa-sing seperation the mode makes a transition to R-1/3 scaling, where R = τv/τH. The R-1/5 scaling is shown to be correlated with violation of the constant-φ approximation.