Investigation of vibrational relaxation of carbon dioxide molecules by means of the phase method

The paper describes an experimental investigation of the vibrational relaxation of CO2 molecules from the (00/0/1) state during collisions with CO2, H2O, and CO molecules in the 300-1000 K temperature range. The investigation is based on the so-called phase method, wherein the phase shift between spontaneous emission from CO2 (00/0/1) and the pump wave is determined. Attention is also given to probabilities of relaxation of CO2 from the (00/0/1) state during collisions with pure KBr surfaces and fused quartz surfaces. The paper includes a description of the equipment used, its principles of operation, and experimental results.