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 Δυ′ 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.