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Circumvention of anomalous fading in feldspar luminescence dating using Post-Isothermal IRSL

机译:使用后欧IRSL的长石发光约会的异常衰落

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In luminescence dating of feldspar, laboratory induced luminescence necessary to assess the naturally acquired dose in the environment suffers from a poorly understood instability over time, known as anomalous fading (AF). AF is the source of commonly observed age underestimation in optical dating of feldspar. Approaches to circumvent AF include correction methods as well as attempts to measure directly an unfading component of feldspar luminescence, e.g. post-IR IRSL protocols. The former has the advantage of measuring the easily bleachable traps but requires extrapolations of fading rates. Post-IR IRSL methods can be limited by the use of more difficult-to-bleach traps and hence by potential age overestimations.
机译:在长石的发光约会中,评估环境中天然所获得的剂量所需的实验室诱导的发光患有随时间的时间不良,称为异常衰落(AF)。 AF是长石光学约会中常见的年龄低估的来源。 旨在规避AF的方法包括校正方法,以及试图直接测量长石发光的未发生成分,例如, 后红外IRSL协议。 前者具有测量易漂白的陷阱的优点,但需要推出褪色率的外推。 通过使用更难以漂白的陷阱,可以限制后红外IRSL方法,因此通过潜在的年龄高估。

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