# MEASUREMENT OF THE $\nu_{4}$ BAND OF $H_{3}O^{+}$ BY VELOCITY MODULATION DIODE LASER SPECTROSCOPY

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 Title: MEASUREMENT OF THE $\nu_{4}$ BAND OF $H_{3}O^{+}$ BY VELOCITY MODULATION DIODE LASER SPECTROSCOPY Creators: Gruebele, M.; Polak, M.; Saykally, R. J. Issue Date: 1986 Publisher: Ohio State University Abstract: Diode laser spectroscopy has been used with velocity modulation detection to measure -300 transitions of $H_{3}O^{+}$ in the range from $1400-1850 cm^{-1}$. A preliminary analysis indicates that the $v_{4} +++$ and $v_{4} ---$ bandheads lie at higher frequency than predicted theoretically (1). The line density in some regions of the spectrum greatly exceeds that expected from a single perpendicular inversion band. Progress in the analysis will be reported. $^{1}$. P.R. Bunker, W.P. Kraemer, V. Spirko, J. Mol. Spec. 101, 180 (1983). Description: Address of Gruebele, Polak, and Saykally: Department of Chemistry, University of California, Berkeley, CA 94720. Author Institution: URI: http://hdl.handle.net/1811/16881 Other Identifiers: 1986-FA-12