Detailed Description of the Collision Frequency in the Solar Atmosphere

Abstract This work aims to provide an accurate description and calculations of collision frequencies in conditions relevant the solar atmosphere. To do so, we focus on detailed frequency atmosphere based a classical formalism with Chapman–Cowling integrals, as described by Zhdanov. These integrals allow linking macroscopic transport fluxes multifluid models kinetic scales involved Boltzmann equations. In this context, are computed accurately while being consistent at level. We calculate compare them approaches commonly used literature for typical frequencies, integral data provided Bruno et al., which is multicomponent hydrogen–helium mixture Jupiter. perform comparison Vranjes & Krstic Leake Linton. highlight differences obtained distribution cross sections functions temperature. Then, quantify disparities numerical simulations 2.5D calculating ambipolar diffusion. strategy allows us validate assess accuracy these