As dosimetric materials, undoped and Dy-doped 33.3LiO-66.7B(2)O(3) glasses were synthesized by the melt-quenching method. Their photoluminescence and thermally stimulated luminescence spectra showed several emission lines. A broad glow peak was observed at similar to 75 degrees C in the Dydoped samples, while the undoped sample showed no glow peaks. A linear relationship between irradiation dose and thermally stimulated luminescence intensity was confirmed from 1 to 1000 mGy when the 0.5% Dy-doped glass was exposed to different doses of X-ray radiation.