ISSN:
1089-7674
Source:
AIP Digital Archive
Topics:
Physics
Notes:
The effect of the background drift wave turbulence on the evolution of the low-m tearing modes has been studied, in the quasilinear regime, in various limiting cases. It is found, in the cases of the m=1 classical, collisionless, and drift-tearing modes, that the turbulence introduces finite real frequencies to these modes, which are otherwise purely growing ones, but reduces their instability activity. In the case of the m≥2 classical modes, in a limit ||α||1/2(very-much-greater-than)ρi, the turbulence enhances the frequencies as well as the growth rates of these modes; and in the case of the m≥2 collisionless modes, in the same limit, it enhances the frequencies of these modes, but reduces their instability activity, where ||α||1/2 is the current channel width and ρi is the ion Larmor radius.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.870559
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