Thermoluminescence and hydroxyl defects associated with broad-band infra red absorption in synthetic quartz |
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Authors: | J C Newton-Howes R J Fleming |
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Institution: | 1. Department of Physics, Monash University, 3168, Clayton, Victoria, Australia
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Abstract: | A study has been made of thermoluminescence from synthetic quartz with varying hydroxyl impurity concentrations up to approximately
300 H/106 Si which are associated with a “broad-band” IR absorption in the range 2600–3700 cm−1. These hydroxyl defects are known to be important in the hydrolytic weakening of quartz. We have found only minor differences
in the glow curves of unheated crystals but significant intensity increases when “wet” crystals are heated sufficiently to
cause bubble formation. It would seem that the electron traps are unaffected by the bubble formation, but the electron/luminescence
centre radiative recombination probability is increased. |
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