Optical Absorption, ESR and Termoluminescence (TL) in Copper-Doped Lithium Borate Glasses

摘要

Boron oxide plays a significant role in numerous glasses of high technological importance, such as nuclear wastes management, electronics, low density fibrous silica insulation used in space vehicles, and radiation dosimetry. Lithium borate glasses were produced firing at 980 degrees centigrade in an approximated mixture of reagent grade Li(2)CO(3) and H(3)BO(3) and then cooled rapidly to room temperature. Various amount of Cu were added to produce samples. For absorption measurements in the visible to ultraviolet range, a Zeiss-DMR21 spectrophotometer was used. Thermoluminescence(TL) glow curves and other TL measurements have been carried out on Harshaw 2000A reader. Absorption spectrat were ovtained for irradiated and non-irradiated samples. For ESR measurements a JEOL JES-ME3X spectrometer was used.