science-softCon uv/vis+ photochemistry database; www.photochemistry.org; (C) science-softCon 2019 Substance: oxygen Other Names: Formula: O2 CAS-No.: 7782-44-7 Study: UV absorption cross sections Authors: M. Ogawa Title: Absorption Cross Sections of O2 and CO2 Continua in the Schumann and Far-uv Regions Journal/Source: J. Chem. Phys., 54, 2550-2556, (1971); DOI: 10.1063/1.1675211 Data: table, diagram Energy/Wavelength range: 181.4 - 235.0 nm Resolution: Temperature: 298 K Temperature dependence: no Pressure/Concentration: Phase: gas pH: Comments: The absorption cross section of the O2 continuum in the region 2350-1814 Å and the absorption cross section of CO2 in the region 2160-1718 Å have been measured. The cross section of the O2 continuum is 3.8 x 10-24 cm2 at 2350 Å; it slowly increases towards shorter wavelengths and reaches 10.7 x 10-24 cm2 at about 1980 Å, then increases very rapidly and reaches 7.1 x 10-22 cm2 at about 1814 Å. Author to whom correspondence should be addressed: (e-mail address):