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: R.W. Ditchburn, P.A. Young

Title: The absorption of molecular oxygen between 1850 and 2500 Å

Journal/Source: J. Atmos. Terr. Physics, 24 (2), 127-139, (1962); http://dx.doi.org/10.1016/0021-9169(62)90191-5


Data: diagram, table

Energy/Wavelength range: 185 - 250 nm

Resolution: 

Temperature: 

Temperature dependence:

Pressure/Concentration:

Phase: gas

pH


Comments: Absorption cross-sections for oxygen in the region 1850–2500 Å have been measured. There is a variation with pressure (probably due 
to the formation of O4). The values obtained by extrapolation to zero pressure vary from 15 x 10-24 cm2 at 1900 Å to 3 x 10-24 cm2 at 2300 Å. 

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