Local Mode Effects on the High-Resolution Overtone Spectrum of H2S around 12 500 cm−1

✍ Scribed by Olavi Vaittinen; Ludovic Biennier; Alain Campargue; Jean-Marie Flaud; Lauri Halonen

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 457 KB
• Volume: 184
• Category: Article
• ISSN: 0022-2852
• DOI: 10.1006/jmsp.1997.7319

✦ Synopsis

THIS PAPER IS DEDICATED TO DR. HANS BU ¨RGER ON THE OCCASION OF HIS 60TH BIRTHDAY

The overtone spectrum of H 2 S has been studied by intracavity laser absorption spectroscopy in the wavenumber region 12 270-12 670 cm 01 . The rovibrational analysis has provided upper state rotational parameters for the three interacting vibrational states, ( 401), (104), and (024), observed in the region. The rotational levels of the first two states, constituting the local mode pair 41 { , are strongly coupled by a strong H 22 type interaction. The (024) state is observed via a local perturbation. Altogether, 399 rovibrational lines have been assigned, including 172 rotational upper state sublevels which have been reproduced calculationally within the experimental accuracy of 0.015 cm 01 . A local mode type behavior is evidenced by the values of the rotational parameters. ᭧ 1997 Academic Press

The experimental apparatus for ICLAS has already been 2 To whom correspondence should be addressed.