title: Nitrogen Broadening of Absorption Lines in the nu1, nu2, and nu3 Bands of H2S Determined by Applying an IR Diode Laser Spectrometer
abstract: With an infrared diode laser spectrometer in pulse mode we studied the N2 broadening of H2S absorption lines in the nu1, nu2, and nu3 bands. Altogether 22 lines were investigated: 16 lines from the R branch of the nu1 band (3 </= J" </= 17, 0 </= Ka" </= 6), 5 lines from the R branch of the nu3 band (3 </= J" </= 7, 1 </= Ka" </= 7), and one line from the R branch of the nu2 band (J" = 4, Ka" = 3). The nitrogen broadening coefficients varies strongly between 0.028 cm-1/atm </= gammaH2S-N2 </= 0.109 cm-1/atm. We observed a pronounced J" dependence in the studied quantum number range; i.e., with increasing J" there is a decrease of the broadening coefficient gammaH2S-N2. In contrast the Ka" dependence shows only a weak tendency. For gammaH2S-N2 of the nu1, nu2, and nu3 bands there is no significant difference between lines with comparable rotational quantum numbers. Copyright 1997 Academic Press. Copyright 1997Academic Press
authors.affiliation: Optisches Institut der Technischen Universitat Berlin, Sekretariat PN 0-1, Hardenbergstr. 36, Berlin, 10623, Germany
authors.initials: I
authors.lastname: Meusel
authors.initials: B
authors.lastname: Sumpf
authors.initials: H
authors.lastname: Kronfeldt