[HTML][HTML] Collisional Excitation of H 2O by H 2 Molecules

TR Phillips, S Maluendes…�- …�Journal Supplement v. 107�…, 1996 - adsabs.harvard.edu
Using accurate theoretical rigid-rotor interaction potential for H 2 OH 2 and accurate coupled
channel molecular scattering calculations, rates have been obtained for excitation of para-
and ortho-H 2 O out of the lowest, j= 0, 1, and 2, rotational levels owing to collisions with
para-and ortho-H 2 at kinetic temperatures from 20 to 140 K. Excitation by para-H 2 is not too
different from excitation by He atoms, with most rates being within a factor of 1-3 larger, but
excitation by is significantly different, with some rates an order of magnitude larger than rates�…