Construction of coronal models for H2 and transitions for the evaluation of ro-vibrational temperatures

Excitation–emission models for the H2 d 3 Π u – a 3 Σ g + and I 1 Π g – B 1 Σ u + transitions have been developed based on the coronal approximation. The ground state ro-vibrational temperatures evaluated from the I–B transition are significantly higher than those from the d–a transition. The results may suggest the violation of the coronal approximation for the I–B transition.