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 (D_e) 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.

当将单等分再生剂量（SAR）程序应用于富含钾的多次高温后IR IRSL（MET-pIRIR）信号时，在高剂量（> 1000 Gy）时观察到剂量恢复结果的高估泥河湾盆地的长石（K-长石）晶粒。此类高估是由未经适当校正的不可漂白（残留）信号引起的。提出了一种信号减法来解决这个问题，该方法涉及为可漂白和不可漂白信号建立增长曲线。在这里，我们模拟了残留信号对等效剂量（D _e），并发现即使是少量残留信号，在高剂量下也可能导致高估。我们的结果表明，残留信号不仅会影响年轻样品，还会导致旧样品的错误结果。我们的研究还表明，尽管残留信号可能会导致剂量回收方面的重大错误，但它们对天然样品的影响可能很小，因为它们的残留信号似乎相对较小。