Energy-Transfer Processes in Monochromatically Excited Iodine Molecules. III Quenching and Multiquantum Transfer from υ′ = 43

Abstract

The fluorescence arising from absorption of the 5145‐Å laser line by molecular iodine vapor has been analyzed. Quenching and vibrational and rotational energy‐transfer efficiencies for collision between the excited iodine and other gases (ground‐state I₂, He, Ne, Ar, Kr, Xe, H₂, and CO₂) have been determined, using a numerical solution of the master equation for relaxation. Vibrationally inelastic processes with $\mathrm{\Delta \upsilon \prime }$ ranging from + 5 to − 8 have been observed; their relative magnitudes appear to be well predicted from the oscillator matrix elements of the intermolecular potential coupling terms, properly weighted by a detailed balancing factor.