Dependence of the Silica Glass Parameters on the Fluence of Fast Neutrons

The results of comprehensive investigations into the influence of fast-neutron fluences on the silica glass parameters are presented. In particular, the dose dependences of the parameters are measured by optical (luminescence, absorption, EPR, IR, and refraction), dielectric, and x-ray spectroscopy methods over a wide range of fluences from 10¹⁷ to 10²¹ cm^–2. It is concluded that the specific features in the formation of radiation-induced defects and silica damages are most likely due to the neutron-induced phase transition.