o18abstr.inf 2/17/95 HIGH RESOLUTION ABSORPTION CROSS SECTIONS AND BAND OSCILLATOR STRENGTHS OF THE SCHUMANN-RUNGE BANDS OF ISOTOPIC OXYGEN, 18O2, AT 79K K. Yoshino, D.E. Freeman, J.R. Esmond, R.S. Friedman* and W.H. Parkinson Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, U.S.A. * Also, Dept. of Chem., Harvard University, U.S.A. Planetary Space Science, Vol. 36, No. 11, pp. 1201-10 (1988) Abstract- Cross sections of 18O2 at 79K have been obtained from photoabsorption measurements at various pressures throughout the wavelength region 177.8-197.8 nm with a 6.65 m photoelectric scanning spectrometer equipped with a 2400 lines mm-1 grating and having an instrumental width (FWHM) of 0.0013 nm. The measured absorption cross sections of the Schumann-Runge bands (14,0) through (2,0) are, with the exception of the (12,0) band, independent of the instrumental width. The measured cross sections are presented graphically here and are available at wavenumber intervals of ~0.1 cm-1 as numerical compilations stored on magnetic tape from the National Space Science Data Center, NASA/Goddard Space Flight Center, Greenbelt, MD 20771, U.S.A. Band oscillator strengths of these bands have been determined by direct numerical integration of the measured absolute cross sections and are in excellent agreement with our theoretically calulated values.