science-softCon uv/vis+ photochemistry database;	www.photochemistry.org; (C) science-softCon 2019

Substance: carbon dioxide				Other Names:

Formula: CO2						CAS-No.: 124-38-9

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: 171 - 216 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. In the case of CO2, numerous discrete bands were 
found overlapping a weak continuum in the wavelength region below 1980 Å. The absorption cross section of the CO2 
continuum is about 2 x 10-24 cm2 at 2100 Å; it gradually increases toward the shorter wavelength side, and reaches 
about 4 x 10-24 cm2 at 2000 Å. The continuum rises rapidly at 2000 Å and its value is 1.19 x 10-20 cm2 at 1718 Å.

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