HIGH-RESOLUTION SPECTRA OF THE NU-4-BAND OF CHLORINE NITRATE

High-resolution diode laser spectra have been recorded of the Q branches of chlorine nitrate bands lying in the 780 cm-1 region. They are assigned to the ν4 bands of 35ClONO2 at 780.219 cm-1 and 37ClONO2 at 778.865 cm-1, and to the ν4 + ν9 - ν9 band of 35ClONO2 at 778.735 cm-1. Band contour analyses of these spectra and of previously published FTIR spectra have been carried out. The pressure and temperature dependence of the spectra have also been measured. The analysis of these data has been used to compute the temperature and pressure dependence of the absorption needed for stratospheric modelling. © 1992.