RELATIVE RAMAN CROSS SECTION FOR N2, O2, CO, CO2, SO2, AND H2S

The relative Raman cross sections of gases which are of interest in atmospheric pollutant studies have been measured at 5145 A. These relative cross sections compared to that of N2 are as follows: O2 (1.2), CO (0.91), CO2 (1.5), SO2 (5.5), and H2S (6.6). The Raman cross section of N2 compared to that of benzene has also been measured. Using the absolute cross section of benzene determined by Skinner and Nilsen, the measured Raman cross section of N2 is σN2 = (2.6 ± 1) × 10−31 cm2/sr at 5145 A.