THERMOLUMINESCENT SPECTRUM CHANGES OF NATURAL QUARTZES DEPENDENT ON ANNEALING TREATMENT AND ALUMINUM-CONTENTS

Autor: Shuei Sakaue, Nobutoshi Shirai, Tadashi Sakai, Tetsuo Hashimoto, Motoshi Kojima
Rok vydání: 1991
Předmět:
Zdroj: Analytical Sciences. 7:687-690
ISSN: 1348-2246
0910-6340
DOI: 10.2116/analsci.7.supple_687
Popis: Both of fused and annealed natural quartzes were spectroscopically analyzed by using the IPDA (intensified photodiode array) on-line spectrometric system for measuring 3-dimensional thermoluminescence (TL) glow-curves. A remarkable change of TL property from red to blue occurred after the transformation to fused quartz glass. The TL properties were also searched after thermally annealing treatment for 100h at 1100°C Apparently different changes of TL-colorations were found to occur even within a Z-cut slice from a single quartz crystal; the original blue-TL quartz segments with higher Al-contents than about 100ppm are readily changeable into red-TL color after the thermal annealing, presumably in cooperation with other impurities. Accordingly, the existence of Al-O-A1 and/or Al-O-Si bond in natural quartz has been tentatively considered to play an important role of red-TL color at high temperature.
Databáze: OpenAIRE
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