Heavy-ion Interaction in a Nonisothermal Plasma with Two-ion Correlation Effects

The results of a theoretical investigation of the slowing down of a heavy-ion pair, injected into a classical dense plasma with a velocity smaller than the average electron speed, are presented, paying particular attention to the two-ion correlation effects. Within the dielectric approach, both the electron and ion populations, possibly with different temperatures, are considered to participate in the plasma response via the excitation and damping of ion-acoustic and ion plasma oscillations. The electrostatic potential perturbation generated by test ion pairs and their stopping power are computed.