46th International Workshop on High Energy Density Physics with Intense Ion and Laser Beams

We present a novel, more general analytic solution for the moments of the Boltzmann collision operator. Such moments are essential for deriving hydro equations and their nonthermal extensions. To the best of our knowledge, they have so far only been evaluated for specific models, cross-sections, small nonthermal contributions, and small relative velocities. We overcome these limitations by allowing for arbitrary models, arbitrary cross-section, and using a closed form solution containing all nonlinear terms. As an application, we discuss the nonlinear extension of the 21-moment model of Braginskii.