Abstract
Abstract An investigation of phototransfer-thermoluminescence (PTTL) in epidote crystals has been carried out, using a broad-band u.v. source. The correlation between PTTL and possible anomalous fading of the high temperature (> 500°C) TL glow intensity has been studied by measuring the PTTL-induced low-temperature (> 500°C) peak height in samples which had been stored at room temperature for varying lengths of time following thermal drainage of TL from traps up to 500°C and before u.v. exposure. The results indicate that there is no noticeable fading of latent TL from deep traps for storage times of up to 3 months prior to the u.v. exposure. It may therefore be possible to employ the PTTL technique for purposes such as dating, instead of using the main TL peak (∼270°) in epidote, which is subject to anomalous fading.
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Schedule a callMore From: International Journal of Radiation Applications and Instrumentation. Part D. Nuclear Tracks and Radiation Measurements
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