VUV photoabsorption spectroscopy of sulfur dioxide ice

In this paper we present the first study of the VUV photoabsorption spectrum of condensed phase SO2 recorded over the VUV region 120 to 320 nm (10.33 to 3.64 eV). Distinct spectral features were observed that can be used to distinguish between the formation of amorphous and crystalline ice structures. These signatures may then be used to probe the formation of different ice structures as a function of both deposition rate and substrate temperature.