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

• 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.

Nyckelord

Ab initio

Ion pairs

Molecular state

Non-adiabatic

Production process

Quantum scattering

Spectral line

Stellar atmospheres

Calculations

Atoms

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