Transfer integrals for fully ionized gases

摘要

The general transfer integrals describing the collisional exchange of momentum and energy between the, constituents of multicomponent gases are evaluated for different plasma scenarios characterized by Maxwellian as well as non- Maxwellian distribution functions of the plasma species. Following a brief presentation of; the standard approximation frequently employed in the literature, a comparison of numerical evaluations of the transfer integrals, for various, distribution functions reveals significant differences in the corresponding collisional momentum and energy exchange rates, which are shown to depend mainly on the core structure of the distributions. We demonstrate the inadequacy of the standard approximation and hence the importance, of an accurate evaluation of the transfer integrals with an application to the electron-proton as well as the helium-proton interaction in the solar, wind plasma.