Abstract
Red thermoluminescence (RTL) using a SAR (single-aliquot regenerative-dose) method has been applied to artificial ceramic samples to determine retrospective doses, and to estimate the naturally accumulated doses for natural quartz grains. In the RTL measurement of quartz grains, several preheating effects on equivalent doses around 200 °C were examined for extracted quartz grains from tephra (Medeshima, Miyagi). Preheating at 200 °C for 10 seconds gave better reproducibility and response than those for preheating at 80 °C for 5 minutes. The RTL/SAR method was used to quartz grain samples extracted from pottery pieces with preheating at 200 °C for 10 seconds.
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