  We study the optical properties of glass exposed to ionizing radiation, as it
occurs in the space environment. 24 glass types have been considered, both
space qualified and not space qualified. 72 samples (3 for each glass type)
have been irradiated to simulate a total dose of 10krad and 30krad, imposed by
a proton beam at KVI-Centre of Advanced Radiation Technology (Groeningen).
Combining the information about stopping power and proton fluence, the time
required to reproduce any given total dose in the real environment can be
easily obtained. The optical properties, such as spectral transmission and
light scattering have been measured before and after irradiation for each
sample. Transmission has been characterized within the wavelength range 200
nm-1100 nm. Indications that systematical issues depend on the dopant or
composition are found and described. This work aims at extending the existing
list of space-compliant glasses in terms of radiation damage.
