Laser Excitation Spectra and Lifetime Measurements of the CO (3Δ) State
CO in a supersonic pulsed beam is excited to the d3Δ state by VUV photons generated in a nonlinear four-wave mixing scheme. An excitation spectrum of the CO d3Δ (′ = 20, J′ = 1–3) is obtained at a resolution of 0.8 cm−1 for the first time. The radiative lifetimes of the rotational states are measured as 1.70 ± 0.08 μs, which are similar to but shorter than the lifetimes associated with lower vibrational levels.
Copyright © 1991 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.