After bleaching the optically stimulated luminescence (OSL) signal to a low residual level, the signal has been found to increase during subsequent storage or preheating. This effect is well known in quartz as "recuperation of OSL after bleaching" (Aitken, M.J., Smith, B.W., 1988. Optical dating: recuperation after bleaching. Quat. Sci. Rev. 7. 387-393.). A better understanding of recuperation in feldspars could help the dating specialist, because this process might be different from the recuperation observed in quartz. This paper highlights a few examples of a larger study, which cannot be shown here in complete detail. We carried out a recuperation study of infrared-stimulated luminescence (IRSL) of different feldspars from a mineral collection, mainly alkali feldspars and one albite. The samples were irradiated with doses of 200, 1000 and 2500 Gy in a Co-60 gamma cell. Subsequently, the samples were stored in the dark at room temperature (3 weeks up to 6 months, depending on the applied dose), so that the very intense irradiation-induced phosphorescence can decrease for many orders of magnitude. The emitted OSL was measured through detection filters also used in dating (Schott UG 11, Hoya U 340 for detection of near UV-emissions and Schott BG 39 for detection in the visible range). Recuperation limes up to 100 days were used. The recuperated-OSL emissions were measured either with the optical filters mentioned above or with a modified experimental set-up using a variable interference filler with a continuous detection range from 400 to 700 nm. In some feldspars very intense recuperation signals (up to 100% and more of the initial signal) were observed when optical stimulation was performed with IR and broadband detection using the BG 39 or when detection was carried out in the near ultraviolet region. The IRSL emissions at 410 and 560 nm, measured with the interference filter, showed no recuperation despite a clearly detectable first shine-down. (C) 2000 Elsevier Science Ltd. All rights reserved. [References: 6]
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机译：将光激发发光（OSL）信号漂白至低残留水平后，发现该信号在随后的存储或预热过程中会增加。这种效应在石英中被称为“漂白后OSL的恢复”（Aitken，M.J.，Smith，B.W.，1988。光学测年：漂白后的恢复。Quat.Sci.Rev.7.387-393。）。更好地了解长石中的同化可能对约会专家有所帮助，因为该过程可能与石英中的同化不同。本文重点介绍了一些较大研究的示例，此处无法完整显示。我们进行了矿物质采集（主要是碱长石和一种钠长石）中不同长石的红外激发发光（IRSL）的恢复研究。在Co-60γ细胞中以200、1000和2500 Gy的剂量照射样品。随后，将样品在黑暗中室温下保存（3周至6个月，具体取决于所施加的剂量），因此非常强烈的辐射诱导的磷光可以降低许多数量级。通过在约会中也使用的检测滤光片测量发射的OSL（Schott UG 11，Hoya U 340用于检测近紫外光，Schott BG 39用于可见光范围）。使用了长达100天的再生石灰。回收的OSL发射是使用上述滤光器或使用可变干扰填充物（具有400至700 nm的连续检测范围）的改进实验设置来测量的。在某些长石中，当使用IR和BG 39进行宽带检测或在近紫外区域进行检测时，会观察到非常强烈的能量恢复信号（高达初始信号的100％或更多）。用干涉滤光片测得的410和560 nm处的IRSL发射没有明显的回升，尽管有明显的首次发光。 （C）2000 Elsevier ScienceLtd。保留所有权利。 [参考：6]
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