Electromagnetic drift waves dispersion f

This study investigates the effects of electromagnetic phenomena on resistive and collisionless drift waves, utilizing a local linear analysis based on an electromagnetic drift-kinetic equation that incorporates a BGK-like collision operator. The analysis demonstrates the model's validity in describing linear growth rates of drift wave instabilities across a broad range of plasma parameters, affirming convergence to established reference models in limiting cases. Findings reveal that wave-particle interactions propel collisionless drift-Alfvén wave instabilities particularly in regimes characterized by low collisionality and high beta plasma. Additionally, Landau resonance effects are shown to excite collisionless drift wave modes while simultaneously suppressing high-frequency electron inertia modes, as observed within an electromagnetic fluid model under collisionless and low beta conditions. When accounting for ion temperature variations, the effects induced by finite Larmor radius significantly diminish the growth rate associated with drift-Alfvén wave instability due to the combined influences of high beta stabilization and Landau resonance. This work emphasizes the importance of understanding these electromagnetic interactions within the edge plasma region of magnetic fusion devices.