Lifetime measurements of the e¹II, v = 0 and v = 1 states of¹²C¹⁶O, ¹³C¹⁶O, and¹³C¹⁸O

Summary, in English

In a laboratory investigation using tunable picosecond lasers in a pump-probe configuration, lifetimes of the E ¹u, v = 0 and v = 1 states of CO are experimentally determined. For E 'D, v = 1, the lifetime is found to vary significantly for the isotopomers. Combining the data with existing oscillator strengths, predissociation probabilities within the range of 93.6%-98.6% result for ¹²C¹⁶O, ¹³C¹⁶O, and ¹³C¹⁸O in the case of the E ¹u, v = I state, which is the state that predominantly influences the isotopic fractionation of CO in interstellar clouds.