Vibrational Energy Transfer from the v=1 Level of Carbon Monoxide to the v=1 Level of the Two Isotopical Species of Nitrogen 14 and 15

V-V transfer rates from CO (v=1) to 14N2 and 15N2 are determined from 100 °K to 700 °K using the laser fluorescence method. The great effect of the energy level gap between the colliding partners is dramatically demonstrated. Theoretical considerations explain the observed difference