Abstract
The effect of non-Maxwellian distributed ions on electron temperature gradient mode is investigated. The linear dispersion relation of ηe−mode is obtained which shows that the behavior of this mode changes in the presence of superthermal ions. The growth rate of ηe−mode driven linear instability is found and is observed to modify due to nonthermal ions. However, it is found that this leaves the electron energy transport coefficient unchanged. In the nonlinear regime, a dipolar vortex solution is derived which indicates that the dynamic behavior of the vortices changes with the inclusion of kappa distributed ions. The importance of present study with respect to space and laboratory plasmas is also pointed out.
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