On the computation of dipole transitions in the HD molecule. Part II

The nonadiabatic coupling with PIsub(u) states in the electronic ground state of the HD molecule is discussed. Formulas are given that facilitate the evaluation of PIsub(u) contributions to the energies and transition moments. Numerical computations are performed for all ν<=4 vibrational and J<=4 rotational levels yielding the PIsub(u) and Σsub(u) nonadiabatic corrections. The variational wave functions are employed to compute the transition moments for the 0-ν bands with ν<=4. The results are in good agreement with experimental data except in the case of the 0-0 band where the theoretical results are larger than the mean experimental moment by a factor of about 1.4. (author)