15min:
FOURIER TRANSFORM INFRARED SPECTROSCOPY OF THE H2F+ nu1, nu3 AND nu2 BANDS.

R. FUJIMORI, Y. HIRATA, K. KAWAGUCHI, Department of Chemistry, Faculty of Science, Okayama University, 3-1-1, Tsushima-Naka, Okayama 700-8530, JAPAN; I. MORINO, Satellite Remote Sensing Research Section, Center for Global Environmental Research, National Institute for Environmental Studies Onogawa 16-2, Tsukuba, Ibaraki 305-8506, JAPAN.

Since HF is known as interstellar species, the protonated HF may exist with detectable abundance. Vibration-rotation spectra of H2F+ nu1 and nu3 bands were studied by infrared laser spectroscopy. The nu2 band and pure rotational spectra have not been reported. In this study, we report FTIR spectroscopy of H2F+ nu1, nu3 and nu2 bands. The ion was produced with hollow cathode discharge in F2, He and H2 mixture. A simultaneous analysis of FT data combined with laser spectroscopic data was curried out for nu1 and nu3 bands, to determine ground state molecular constants. Absorption lines in the nu2 region were assigned by using the ground state combination differences. Determined molecular constants can be used to predict pure rotational transition frequencies.