Using two crystal dielectrics (a -Al2O3
and a -SiO2) as examples, the author
studied the effect of large neutron-radiation doses on their optical spectra.
The variation in IR spectra in the region of a-SiO2 stretching
and deformation vibrations is investigated; its relation to changes in
the structure of the irradiated crystal is discussed.
Key words: IR spectrum, irradiation dose, neutron, crystal,
dielectric, structure.