Ion-ion collisional excitations in nonideal plasmas

Summary form only given, as follows. Nonideal effects on the screening and antiscreening channels for ion-ion collisional excitations in classical nonideal plasmas are investigated. The ion-ion interaction potential in classical nonideal plasmas is represented by a pseudopotential model. The semiclassical trajectory approximation is applied to the path of the projectile ion in order to visualize the excitation probability as a function of the impact parameter, collision energy, and nonideality plasma parameter. The semiclassical excitation probability is found to be decreased with increasing the nonideal effect. The nonideal effect on the excitation probability increases with increasing the collision energy. It is also found that the nonideal effect on the antiscreening channel is found to be more significant than that on the screening channel.