Classical electron-ion Coulomb bremsstrahlung in nonideal plasmas

Classical electron-ion Coulomb bremsstrahlung process is investigated in cl assical nonideal plasmas using effective pseudopotential model taking into account the plasma screening and collective effects. The straight-line traj ectory method is applied to the motion of the projectile electron in order to visualize the variation of the differential bremsstrahlung radiation cro ss section (DBRCS) as a function of the scaled impact parameter, nonideal p lasma parameter, projectile energy, photon energy, and Debye length. The re sults show that the DBRCS in ideal plasmas described by the Debye-Huckel po tential is always greater than that in nonideal plasmas, i.e., the collecti ve effects reduce the DBRCS for both the soft and hard photon cases. For la rge impact parameters, the DBRCS for the soft photon case is found to be al ways greater than that for the hard photon case.