On a Shock-Tube Study of CO2–CO Vibrational Energy Transfer

Abstract

The rate of vibrational energy transfer from CO₂(001) to CO(v=1) has been measured from 730 to 2325°K using a shock tube. Time‐resolved measurements were made of the infrared emission from the CO(v=1) level as it approached equilibrium following shock heating. These measurements were then used as input in a model calculation to obtain the rates for the ${\mathrm{CO}}_2–\mathrm{CO}$ energy‐transfer reaction. The data indicate that energy transfer from CO₂ to CO is slightly more efficient than transfer from CO₂ to N₂ in spite of the 10‐fold increase in the energy defect for CO.