Benchmark Calculations of Electron Impact Electronic Excitation of the Hydrogen Molecule
Abstract
We present benchmark integrated and differential cross-sections for electron collisions with H2 using two different theoretical approaches, namely, the R-matrix and molecular convergent close-coupling (MCCC). This is similar to comparative studies conducted on electron-atom collisions for H, He and Mg. Electron impact excitation to the b \ 3u+, a \ 3g+, B \ 1u+, c \ 3u, EF \ 1g+, C \ 1u, e \ 3u+, h \ 3g+, B' \ 1u+ and d \ 3u excited electronic states are considered. Calculations are presented in both the fixed nuclei and adiabatic nuclei approximations, where the latter is shown only for the b \ 3u+ state. Good agreement is found for all transitions presented. Where available, we compare with existing experimental and recommended data.
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