Title :
Effect of electron diffusion on m=2 tearing mode
Author :
Prasad, P. V Siva Rama
Author_Institution :
Dept. of Phys., Indian Inst. of Technol., New Delhi, India
fDate :
4/1/1997 12:00:00 AM
Abstract :
The effect of electron diffusion due to background drift wave turbulence on the stability of the m=2 tearing mode, in the collisionless and the semicollisional regimes, has been studied. The coherent direct interaction approximation has been applied to the drift-kinetic equation to obtain the renormalized tearing mode equation in the turbulent background. It has been found from the present calculations that, in the collisionless regime, the electron diffusion does not affect the stability of the mode significantly, but in the semicollisional regime, it significantly stabilizes the mode
Keywords :
plasma drift waves; plasma kinetic theory; plasma transport processes; plasma turbulence; tearing instability; background drift wave turbulence; coherent direct interaction approximation; collisionless regime; drift-kinetic equation; electron diffusion; m=2 tearing mode; renormalized tearing mode equation; semicollisional regime; Distribution functions; Electrons; Frequency; Magnetic fields; Maxwell equations; Nonlinear equations; Plasma temperature; Plasma waves; Stability; Temperature distribution;
Journal_Title :
Plasma Science, IEEE Transactions on
