# DIFFERENCE FREQUENCY LASER SPECTROSCOPY OF THE $\nu_{1}$ FUNDAMENTAL BAND OF $HOCO^{*}$

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 dc.creator Amano, T. en_US dc.creator Tanaka, Keiichi en_US dc.date.accessioned 2006-06-15T14:54:31Z dc.date.available 2006-06-15T14:54:31Z dc.date.issued 1985 en_US dc.identifier 1985-RA'-6 en_US dc.identifier.uri http://hdl.handle.net/1811/12134 dc.description Author Institution: National Research Council of Canada, Herzberg Institute of Astrophysics; Department of Chemistry, Kyushu University en_US dc.description.abstract We have demonstrated an enhancement of ion signals by about an order of magnitude in the $3 \mu m$ region obtained with a hollow-cathode discharge cell. This enabled us to detect the $\nu_{1}$ fundamental band of $HOCO^{+}$, and we have already reported a preliminary result. Since then more lines have been observed, and now we report a more detailed analysis of the $\nu_{1}$ band of this ion. The $HOCO^{+}$ ions were generated in a modulated discharge through a flowing gas mixture of $CO_{2}$ (20 mTorr) and $H_{2}$ (250 mTorr). More than 500 lines of both the a-type and b-type transitions were observed in the range of $3300-3400 cm^{-1}$. The molecular constants were determined for the ground and excited states. The molecular structure of this ion is similar to that of HNCO. The large centrifugal distortion constants $(\Delta_{K}, \Phi_{K},---)$ may be an indication of the quasi-linearity of this ion. en_US dc.format.extent 95768 bytes dc.format.mimetype image/jpeg dc.language.iso English en_US dc.publisher Ohio State University en_US dc.title DIFFERENCE FREQUENCY LASER SPECTROSCOPY OF THE $\nu_{1}$ FUNDAMENTAL BAND OF $HOCO^{*}$ en_US dc.type article en_US