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首页> 外文期刊>Quaternary geochronology >The effect of residual signal on dose measurements using MET-pIRIR signals from K-feldspar
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The effect of residual signal on dose measurements using MET-pIRIR signals from K-feldspar

机译：k-feldspar的梅PiRir信号对残留信号对剂量测量的影响

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摘要

Overestimation in dose recovery results was observed at high doses (>1000 Gy) when a single-aliquot regenerative-dose (SAR) procedure is applied to the multiple-elevated-temperature post-IR IRSL (MET-pIRIR) signals from potassium-rich feldspar (K-feldspar) grains from the Nihewan Basin. Such overestimation results from the non-bleachable (residual) signals that were not appropriately corrected for. A signal-subtraction method was proposed to solve this problem, which involves building growth curves for the bleachable and non-bleachable signals. Here we modelled the effect of residual signal on equivalent dose (De) and found that even a small amount of residual signal may give rise to large overestimation at high doses. Our results highlight that residual signals may not only affect young samples but may lead to erroneous results for old samples. Our study also suggests that although residual signals may result in significant error in the dose recovery, they may have a very small effect on natural samples because their residual signals seem to be relatively small.
机译：当从富含钾的多重升高的温度后红外IRSL（Met-Pirir）信号施加单次调味剂再生剂剂量（SAR）程序时，在高剂量（> 1000Gy）以高剂量（> 1000Gy）观察剂量恢复结果。来自Nihewan盆地的长石（K-FELDSPAR）谷物。这种高估结果来自不适当校正的不漂白（残差）信号。提出了一种信号减法方法来解决该问题，这涉及构建漂白和不漂白信号的生长曲线。在这里，我们建模了残留信号对等效剂量（DE）的影响，发现即使少量的残余信号也可能导致高剂量的大高度估计。我们的结果强调，残留信号可能不仅影响年轻样本，而且可能导致旧样品的错误结果。我们的研究还表明，尽管残留信号可能导致剂量恢复中的显着误差，但它们可能对天然样品产生非常小的影响，因为它们的残余信号似乎相对较小。

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