BEB approach DNA damage MCDF wavefunctions Non-Maxwellian plasmas Physics R-matrix Research & information: general alcohols alkali metals approximation of cross sections argon optical emission spectroscopy backscattering binary-encounter-Bethe butanol collisional-radiative model coronal models coulomb glory critical minima cross section cross sections cross-section calculations disordered systems dispersion relation dissociative electron attachment electron electron and positron scattering electron atomic collisions electron capture electron elastic scattering electron ionization