Ionization Potential and Absorption Coefficient of COS

Abstract

Absorption and photoionization coefficients of COS in the region 1070–1700 Å were measured with a resolution of 0.5 Å by photoelectric methods. The absorption curves support the photographic studies of Price and Simpson and Tanaka, Jursa, and LeBlanc. The doublet first ionization potential of the molecule was found to be 11.18 and 11.22±0.01 eV from the convergence limit of a Rydberg series and the photoionization curve.