Collisional ion stopping power in warm dense matter

A model based on plasma kinetic theory is developed to calculate the stopping power of ions in warm dense matter. It uses the Boltzmann-Uheling-Uhlenbeck collision operator to appropriately treat the dynamics and degeneracy of the electrons. Additionally, quantum scattering of the electrons is computed based on the potential of mean force obtained using an average atom model to include strong Coulomb correlations in the plasma. Results of a deuteron stopping in a solid density plasma at a temperature of a few electronvolts are shown to be comparable to time dependent density functional theory calculations. The advantage of the model calculation is that it uses a fraction of the computational resources. Further, this model describes the relevant physics processes in the transition from the classical plasma limit to the degenerate one.