Green et al. 1993
, S. Maluendes, and A.D. McLean, 1993: Improved collisional excitation rates for interstellar water. Astrophys. J. Supp. Series, 85, 181-185, doi:10.1086/191760.
Theoretical rate constants among the lowest 45 para and 45 ortho rotational levels of water in collisions with He atoms have been calculated for temperatures between 20 and 2000 K using a recently improved theoretical interaction potential. These values are about 30-40% larger than those reported previously (Palma et al. 1988b) but relative sizes of different state-to-state rates have not been changed significantly. Successive improvements to the theoretical description of this system now appear to have converged.