Photo-transferred thermoluminescence from deep traps in quartz |
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Authors: | M. Bertucci I. Veronese M.C. Cantone |
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Affiliation: | 1. Dipartimento di Fisica, Università degli Studi di Milano, Sezione di Fisica Medica via Celoria 16, 20133 Milano, Italy;2. INFN, National Institute of Nuclear Physics, Sezione di Milano, Milano, Italy |
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Abstract: | Photo-transferred thermoluminescence (PTTL) measurements were performed on analytical grade quartz with the aim to study the dependence of the PTTL signal on preheat temperature and light-exposure time. The results proved that, in addition to the well-known contribution due to the electron traps related to the 325 °C thermoluminescence peak, a non-negligible role was played by deep thermally disconnected traps. Moreover, the shape of the time-response curve for the PTTL signal of quartz samples preheated at high temperature values suggested that recombination processes of optically stimulated electrons from deep traps involved also a non-radiative recombination centre. |
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