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: absorption cross sections Authors: H. Sun, G.L. Weissler Title: Absorption Cross Sections of Carbon Dioxide and Carbon Monoxide in the Vacuum Ultraviolet Journal/Source: J. Chem. Phys., 23, 1625-1628, (1955); http://dx.doi.org/10.1063/1.1742398 Data: Energy/Wavelength range: 37.4 - 130.6 nm Resolution: Temperature: Temperature dependence: Pressure/Concentration: Phase: gas pH Comments: Absorption cross sections of CO2 and CO in the region from 1306 A to 374 A have been measured. The absorption spectrum of CO2 consists of strong resonance bands between 1306 A and 700 A, with one of them at 923 A showing an unusually large cross section of 117x10-18 cm2. A continuum with bands superimposed on it was observed to start at about 860 A or 14.4 eV which corresponded to the first ionization potential of CO2. From 700 A toward shorter wavelengths, the contour of the continuum was better defined and smooth with a broad maximum of 36x10-18 cm2 at 550 A and a total f-value of 4.4. Author to whom correspondence should be addressed: (e-mail address):