)ecember 1982 STABILIZATION OF THE TEARING MODE IN LOW DENSITY TOKAMAK PLASMAS BY TURBULENT ELECTRON DIFFUSION*
نویسندگان
چکیده
The effect of turbulent electron diffusion from stochastic electron orbits on the stability of low beta fluctuations is considered. A set of coupled self-adjoint equations is derived for the fluctuation potentials and A,,. For the tearing mode, it is shown that stability is obtained for sufficiently large values of the diffusion coefficient, Provided D, 1/n, this implies that a density threshold must be surpassed before the tearing mode is observed. Numerical calculations also support this conclusion.
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