Ab initio cross sections for low-energy inelastic Mg+H collisions

Authors :: Belyaev, Andrey K.
Barklem, Paul S.
Guitou, M.
Spielfiedel, A.
Feautrier, N.
Vlasov, D. V.
Rodionov, D. S.
Belyaev, Andrey K.
Barklem, Paul S.
Guitou, M.
Spielfiedel, A.
Feautrier, N.
Vlasov, D. V.
Rodionov, D. S.
Publication Year :: 2012
Abstract: Full quantum scattering calculations of cross sections for low-energy near-threshold inelastic Mg + H collisions are reported, such processes being of interest for modelling of Mg spectral lines in stellar atmospheres. Nonadiabatic transions associated with radial couplings at avoided ionic crossings in the 2Σ+ molecular states are found to be the main mechanism for excitation and ion-pair production processes.