SO2ABSTR84.INF                                     9/22/95

HIGH RESOLUTION ABSORPTION CROSS SECTION MEASUREMENTS OF SO2 AT 213 K
IN THE WAVELENGTH REGION 172-240 nm

D.E. Freeman, K. Yoshino, J.R. Esmond and W.H. Parkinson
Harvard-Smithsonian Center for Astrophysics, 60 Garden Street,
Cambridge, MA  02138, U.S.A.

Planetary Space Science, Vol. 32, No. 9, pp. 1125-1134, 1984

Abstract-  Laboratory measurements at high resolution of the absorption 
cross section of SO2 at the temperature 213 K have been performed in 
the wavelength region 172-240 nm with a 6.65 m scanning spectrometer/
spectrograph operated at an instrumental width of 0.002 nm.  The 
measured cross sections are presented graphically in representive 
wavelength regions and are available throughout the region 172-240 nm 
at wavenumber intervals of 0.4-0.1 cm-1 as a numerical tabulation stored 
on magnetic tape from the National Space Science Data Center, NASA/
Goddard Space Flight Center, Greenbelt, MD 20771, U.S.A.  The measured
cross sections, which are relevant to the photochemistry of planetary 
atmospheres, possess significantly more spectroscopic structure, 
and are more accurate, than previous measurements made at lower resolution.