Table of Contents
Laser Chemistry
Volume 11, Issue 2, Pages 119-127

Laser Excitation Spectra and Lifetime Measurements of the CO d(3Δi) State

1Georgia Institute of Technology, Atlanta, Georgia, USA
2Center for Naval Analyses, Alexandria 22303-0268., VA, USA
3MIT Lincoln Laboratory, Lexington, MA, USA

Received 25 March 1991; Accepted 8 May 1991

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.


CO in a supersonic pulsed beam is excited to the d3Δi state by VUV photons generated in a nonlinear four-wave mixing scheme. An excitation spectrum of the CO d3Δi (ν′ = 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.