Role of Ion Temperature Gradient, Shear Flow, and Nonthermal Electron Population in the Formation of Global Vortices in Magnetoplasma

In this study, we investigate the formation of global vortices in magnetized non-Maxwellian plasma subjected to density and temperature gradients, in the presence of ion-temperature-gradient (ITG) instability and shear flow. Utilizing the Braginskii model of transport equations, we analytically and numerically derive solutions for global vortices, highlighting their distinct characteristics compared to conventional dipolar vortices. We derive a modified linear dispersion relation and explore its various limiting cases, revealing that the growth rate of low-frequency ITG instability is influenced by the kappa factor and Cairn’s non-Maxwellian parameter. Numerical illustrations are provided using laboratory plasma parameters. Our findings are pertinent to understanding space plasmas and tokamak plasma environments, particularly in contexts involving resonant frequency heating and electron cyclotron heating experiments.