A Hybrid Model for Multiscale Laser Plasma Simulations with Detailed Collisional Physics

The purpose of this document is to summarize the work accomplished under work unit Q02Z. The sole source of funding for this program was through AFOSR and was supported by Dr. Jason Marshall under contract 14RQ05COR and Dr. Fariba Fahroo under contract 12RZ06COR. The goal of this project was to develop a new numerical approach for multiscale plasma simulations that spans the range of far-from equilibrium to local thermodynamic equilibrium conditions. The use of a detailed Collisional Radiative operator was necessary to accurately account for all processes of the collisional cascade during the relaxation of a hot plasma. To this end, the focus was in the development of a a detailed time accurate Collisional Radiative model, b a one-dimensional Multi-Fluid formulation that includes inelastic collisions, c a conservative BGK collision operator, and d hybridization techniques that blends low and high-fidelity algorithms. The work performed over the last three years has done much to advance the state of the art in complexity reduction of Collisional Radiative CR modeling as well as the effects of inelastic collisions on the Multi-Fluid description of plasmas.