In this paper, we theoretically study the nonlinear absorption process of electrostatic electron Bernstein wave assisted super-Gaussian laser beam in collisional plasma embedded with static magnetic field. The super-Gaussian laser beam couples with the pre-existed electrostatic electron Bernstein wave having couple frequency \({\omega }_{1}=\omega +{\omega }_{0}\) and wave number \({k}_{1}=k+{k}_{0}\) where \(\omega\) and \({\omega }_{0}\) are the electrostatic wave (electron Bernstein wave) and super-Gaussian laser beam frequencies respectively and \(k\) and \({k}_{0}\) are the electrostatic wave and super-Gaussian laser beam wave numbers respectively. The coupled wave produces oscillatory velocity to the plasma electrons and this imparting oscillatory velocity produce linear and nonlinear current density. An analytic expression of absorption coefficient of electrostatic wave assisted super-Gaussian laser beam has been derived. The graphical results show that absorption coefficient is dependent on super-Gaussian mode index, laser beam width parameter, electron Bernstein wave frequency, electron thermal velocity, electron cyclotron frequency, and electron-neutral collisional frequency. The association of electrostatic wave with super-Gaussian laser beam can be efficiently enhanced the absorption process. This anomalous nonlinear absorption process of electrostatic wave assisted super-Gaussian laser beam might be applicable in harmonic generation and electron heating.
