MEASUREMENTS OF PRESSURE BROADENING AND SHIFTS OF O(3) LINES IN THE 3-MU-M REGION

We have recorded high-resolution Fourier transform absorption spectra of ozone broadened by dry air, by N2, or by O2 at room temperature. Fr om these spectra we have determined pressure-broadening and line-shift coefficients for over 270 lines in the nu1 + nu2 + nu3 and 3nu3 bands . The Lorentz broadening coefficients obtained in these bands are simi lar to those determined from measurements in the nu1, nu3, and nu1 + n u3 bands. However, there is some evidence for a small vibrational depe ndence of the broadening coefficients. As expected, the pressure-induc ed lineshifts determined in the 3-mum hands are significantly larger t han those observed in the 4.8- and 9-mum regions. (C) 1994 Academic Pr ess, Inc.