NASA - National Aeronautics and Space Administration

Absolute intensities of 376 1603 lines in the 9-11 μm region have been determined from high-resolution infrared absorption spectra recorded at room temperature using a Fourier transform spectrometer. The ozone samples were contained in a glass cell having crossed IR-transmitting and UV-transmitting paths,and the UV absorption at 254 nm was used to monitor ozone concentrations in the cell. A multispectrum nonlinear least squares fitting procedure was used to determine intensities for 366 lines in the ν3 fundamental band and 10 lines in the ν1 band. The absolute accuracy of these intensity values ranges from 2% for the strongest, most well determined lines to 4 or 5% for the weakest lines measured. On average, our measured intensities are approximately 1% larger than the values on current spectroscopic databases.