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: photolysis, quantum yields, absorption spectrum

                
Authors: W.B. DeMore, M. Mosesman

Title: Photolysis of CO2 at 1849 Å

Journal/Source: J. Atmos. Sci., 28, 842-846, (1971); doi: 10.1175/1520-0469


Data: diagram

Energy/Wavelength range: 184.9 nm; 180 - 200 nm

Resolution: 

Temperature: 298 K

Temperature dependence: 

Pressure/Concentration: ~ 4550 - 55000 mbar

Phase: gas

pH:
 

Comments: Photolysis of CO2 at 1849 Å (Hg lamp) has been studied at pressures in the range 66-800 psi, at room temperature. 
The primary dissociation quantum yield is 1.0. The quantum yield results at 1849 Å suggest that CO2 dissociates at all wavelengths 
where absorption is appreciable.
A decadic extinction coefficient epsilon = 4.2 ± 0.3 x 10-3 cm-1 atm-1 for CO2 at 184.9 nm has been determined.

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