Einstein A coefficients for rovibronic lines of the A2π → X2Σ+ and B'2Σ+ → X 2Σ+ transitions of MgH

Abstract

Einstein A coefficients have been calculated for rovibronic lines of the A2π →X2σ+ and B'2σ+ →X2σ+ transitions of 24MgH. Using the experimentally determined analytic potential energy curve for the X 2σ+state, and the Rydberg-Klein-Rees potentials for the A2π and B'2σ+states, combined with the most recent ab initio transition dipole moments, rovibronic transition moments were computed. The rovibronic transition frequencies were obtained accurately by subtracting the published term values of the X 2σ+, A2π and B'2σ+ states. Using the rovibronic transition dipole moments, transition frequencies and the Hönl-London factors, the Einstein A coefficients were calculated individually for ~30 000 rovibronic lines of the A2π→X2σ+ and B'2σ+ →X2σ+ transitions of 24MgH. © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society.