Novel features of electromagnetic waves in an isotropic degenerate electron-ion plasma

Abstract Within the framework of kinetic theory, nonlinear interaction electromagnetic waves (EMWs) with a degenerate electron-ion plasma is studied to account for electron quantum mechanical effects. For this purpose, specific regime considered, which Fermi velocity assumed be taken order group EMWs. This eventually leads existence Landau damping rate EMWs in presence Ponderomotive force. The electrons-ion density oscillations may arisen from EMWs, leading new type Schrödinger equation terms complex amplitude pump wave. profiles reveal that become less damped increasing tunnelling electrostatic response linear also investigated and derived dispersion ion-acoustic rate. latter direct function speed does not rely on Bohm tunneling effect. obtained results are numerically analyzed two microwaves different harmonics context nonrelativistic astrophysical dense environments, e.g., white dwarfs, where corrections cannot ignored.