Absorption Coefficients of Gases in the Vacuum Ultraviolet. Part IV. Ozone

Abstract

Absorption coefficients of ozone gas (purity 90–95 percent) were obtained in the region 1050–2200A by a method described previously. Several strong continua, as well as weak bands, were observed. The curve for absorption intensity shows a minimum (8 cm⁻¹) at about 2015A. Below this wavelength, the absorption coefficient increases gradually to a weak maximum (23 cm⁻¹) at about 1725A and then rapidly to a strong maximum (420 cm⁻¹) at about 1330A. In the region 1050–1450A, the absorption intensity does not fall below the value 130 cm⁻¹. The results were compared with Mulliken's treatment of the electronic spectrum of ozone.