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An investigation of the thermally stimulated luminescence (TSL) from quartz irradiated at 95 K h~s been made below room temperature. The synthetic quartz specimens were of very high quality wIth a Q of about 10 6 . Such material contains few impurities and the TSL is weak. Nonetheless, it was determined that three regions ofTSL glow peak interest exist. Region I (115-145 K) contains a single sharp peak having a maximum in its broad spectral emission at about 450 nm; Region II (145-185 K) is quite complex in structure, and is dependent upon defect content and sample treatment; Region III (185-270 K) can be eliminated by electrodiffusion (sweeping) techniques or by irradiation at temperatures above 250 K prior to the 95-K irradiation. Both Regions II and III ~how b.roadband spectral emission with maxima near 380 nm. The intensity of the TSL glow peakIn RegIon III appears to correlate well with the presence of AI-Na + and/or AI-Li ~ centers as determined from other measurements, suggesting it may provide yet another method for quartz crystal quality evaluation.

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