Measurement of the Lifetime of the A 1Π State of CO by Level-Crossing Spectroscopy

Details Measurement of the Lifetime of the A 1Π State of CO by Level-Crossing Spectroscopy Measurement of the Lifetime of the A 1Π State of CO by Level-Crossing Spectroscopy

Mar 1970

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1970phrvl..24..705w&link_type=abstract

Physical Review Letters, vol. 24, Issue 13, pp. 705-708

Physics

13

Scientific paper

The lifetime of the v=2 level of the A 1Π state of CO has been measured by molecular level-crossing spectroscopy. Unlike previous experiments with molecules in which the Hanle effect has been analyzed for individual rotational states, the present results are obtained from analysis of the composite level-crossing signal from all of the rotational states which are excited by the entire A-->X(2, 0) resonance band. Our experimental result is τ(v=2)=9.0+/-1.0 nsec in good agreement with Hesser's value of 10.5 +/- 1.0 nsec obtained from phase-shift experiments.

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