Abstract
In collisions between 12C16O and para-H2 molecules, the near-resonance vibrational relaxation process CO(n=1)+H2(j=2) to CO(n=0)+H2(j=6)+87.03 cm-1 is known to be important. The authors present the results of a quantum mechanical calculation of the rate of this process. Comparison is made both with recent semiclassical calculations and with experiment.