ANALYSIS OF THE $C^{2}\Pi - X^{2}\Sigma^{+} (0,0)$ BAND OF AlO.
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Date
1993
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Ohio State University
Abstract
Transitions in AlO have been the subject of extensive spectroscopic investigation, bands due to A1O have been observed in the solar flares. In the present study a supersonic beam of AlO was produced by laser vaporization and the $C^{2}\Pi - X^{2}\Sigma^{+} (0,0)$ band studied by LIF. The low resolution spectra were recorded using a pulsed dye laser (Lumonics Hyperdye 300, FWIIM $\approx 0.1 cm^{-1}, 10$ nsec) frequency doubled to the required wavenumber range (33000 to $33100 cm^{-1}$). High resolution spectra were recorded using the output from a Coherent 699 ring dye laser, amplified using a four stage pulsed amplification chain, then frequency doubled. This arrangment gave a FWHM $\approx 180 MHz$, which makes it possible to partly resolve the hyperfine structure of the $X^{2}\Sigma^{+}$ state. A rotational analysis is currently being carried out and the results will be available at the time of the meeting.
Description
Author Institution: Steacie Insitute for Molecular Sciences, National Research Council of Canada