Ab initio computation of radiative lifetimes of the H2 molecule in the nonadiabatically coupled J=1 states derived from {E F+G K+H H̄} 1Σ+g+Ig

Abstract
The vibrational matrix elements of the electronic dipole moments for the transitions (EF, GK, HH̄, I)→(B, C, B′) have been computed in the adiabatic approximation and they have been transformed according to a nonadiabatic representation of the radially and angularly coupled J=1 states of the initial 1+g and 1Πg states. The corresponding probabilities for spontaneous emission and the radiative lifetimes are computed and compared with experimental data.