DOUBLE TEARING MODE IN PLASMA WITH MAGNETIC BRAIDING | Zendy

Dong Jia-Qi | Zendy

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DOUBLE TEARING MODE IN PLASMA WITH MAGNETIC BRAIDING

Author(s) -

Dong Jia-Qi

Publication year - 1984

Publication title -

acta physica sinica

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.

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