Abstract Spectrally resolved thermoluminescence (SR-TL) measurements of beta irradiated chemically pure KCl pellets were carried out. Before each SR-TL measurement the pellets were measured using continuous wave optically stimulated luminescence (CW-OSL) with a green stimulation source. It was found that CW-OSL readout significantly affects the SR-TL response with respect to both total intensity and spectral distribution of the luminescence. The results were dependent on the stimulation time, however even after 45 min of optical bleaching a significant number of traps and recombination centers was still populated. After green stimulation additional short wavelength (UV) band appears. The resulting emission spectrum was deconvoluted to four and five emission bands. In both cases the peak positions were stable irrespective of the stimulation time. Theoretical analysis of the dependence of spectral components on the OSL stimulation time was performed. It indicates that at least some of recombination and/or bleaching processes did not involve a delocalized band.

中文翻译：

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光学漂白对 β 辐照氯化钾小球中光谱分辨热释光的影响

摘要 对经 β 辐照的化学纯 KCl 颗粒进行了光谱分辨热释光 (SR-TL) 测量。在每次 SR-TL 测量之前，使用具有绿色刺激源的连续波光受激发光 (CW-OSL) 测量颗粒。发现 CW-OSL 读数显着影响 SR-TL 响应的总强度和发光光谱分布。结果取决于刺激时间，然而，即使经过 45 分钟的光学漂白，仍然存在大量陷阱和重组中心。绿色刺激后，会出现额外的短波长 (UV) 波段。得到的发射光谱被解卷积为四个和五个发射带。在这两种情况下，无论刺激时间如何，峰值位置都是稳定的。对光谱分量对 OSL 刺激时间的依赖性进行了理论分析。这表明至少一些重组和/或漂白过程不涉及离域带。