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Spectroscopy of jet-cooled Ag2Au

✍ Scribed by Jacqueline C. Pinegar; Jon D. Langenberg; Michael D. Morse

Publisher: Elsevier Science
Year: 1993
Tongue: English
Weight: 365 KB
Volume: 212
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(93)87228-u

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✦ Synopsis

Resonant two-photon ionization spectroscopy has been used to study the supersonically cooled metal cluster, A&u. One electronic band system has been observed, with the origin band at I7525 cm-'. Vibronic progressions have been found and analyzed using a least-squares fitting procedure. The molecule is assigned as belonging to the C& point group in both the ground and the excited electronic states, and vibrational progressions in both of the two totally symmetric (a,) vibrational modes have been identified, giving values of w', =200.15f0.49 cm-' and oi=111.28f0.62 cm-' for the excited electronic state of the io7Ag"'sAg'97A~ isotopic modification. Anharmonicities x; , , &, and x;, are also reported for the excited electmnic state, along with lifetime measurements for several vibronic levels. This work also places the ionization potential of Ag,Au in the range 5.006 IP(Ag,Au) < 6.42 eV.

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