V-V transfer rates from 12CO(v = 1) to 14N2, 15N2, CO and O2 have been determined versus temperature, from 100 to 700 °K, using the laser fluorescence method. For the 12CO - 13CO and 12CO - 15N2 systems, the transfer rate decreases with temperature showing that long-range multi-polar forces have a preponderant effect on the transfer. For the less resonant systems 12CO - 14N2 and 12CO-O2 the rate increases with temperature from 100 °K showing that repulsive forces have a dominant effect. For the two systems 12CO - 14N2 (Δν = - 187.5 cm^{-1}) and 12CO - 15N2 (Δν = - 108.5 cm^{-1}), the effect of the energy level gap Δν between the colliding partners is dramatically demonstrated; at 100 °K, the ratio of these rates is as great as about 30; theoretical calculations explain these results. This set of experimental studies is a clear demonstration of the different interaction forces.
Effect of isotopic substitution on V-V transfer rates between CO to CO, N2 and O2 / L., Doyennette; Mastrocinque, Giuseppe; A., Chakroun; H., Gueguen; M., MARGOTTIN MACLOU; L., Henry. - (1976). (Intervento presentato al convegno 3lth Symp. on Mol. Spectr., Columbus, USA 1976 tenutosi a Columbus, USA nel 1976).
Effect of isotopic substitution on V-V transfer rates between CO to CO, N2 and O2
MASTROCINQUE, GIUSEPPE;
1976
Abstract
V-V transfer rates from 12CO(v = 1) to 14N2, 15N2, CO and O2 have been determined versus temperature, from 100 to 700 °K, using the laser fluorescence method. For the 12CO - 13CO and 12CO - 15N2 systems, the transfer rate decreases with temperature showing that long-range multi-polar forces have a preponderant effect on the transfer. For the less resonant systems 12CO - 14N2 and 12CO-O2 the rate increases with temperature from 100 °K showing that repulsive forces have a dominant effect. For the two systems 12CO - 14N2 (Δν = - 187.5 cm^{-1}) and 12CO - 15N2 (Δν = - 108.5 cm^{-1}), the effect of the energy level gap Δν between the colliding partners is dramatically demonstrated; at 100 °K, the ratio of these rates is as great as about 30; theoretical calculations explain these results. This set of experimental studies is a clear demonstration of the different interaction forces.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
