The high-resolution laser excitation spectrum of the 001-000 and 000-000 bands of the (B) over tilde(2) Sigma(+)-(X) over tilde(2) Sigma(+) transition of SrOD was recorded. The SrOD molecules were made by pulsed laser ablation of Sr metal followed by reaction with D2O. Sub-Doppler resolution and rotational cooling were achieved by expansion into vacuum and excitation with a cw dye laser perpendicular to the molecular beam. A molecular linewidth of 200 MHz and the lack of spectral congestion allowed a Q branch to be detected. Spin-orbit mixing between the (A) over tilde(2) Pi and (B) over tilde(2) Sigma(+) states caused the unusual appearance of a moderate intensity Q branch in a nominally parallel (2) Sigma(+)-(2) Sigma(+) transition. From the relative intensities of the rotational lines, the ratio of the perpendicular to the parallel transition dipole moment was found to be 0.2 to 0.3. (C) 1996 Academic Press, Inc.
|Number of pages||6|
|Journal||JOURNAL OF MOLECULAR SPECTROSCOPY|
|Publication status||Published - Apr 1996|
- FOURIER-TRANSFORM SPECTROSCOPY