Red thermoluminescence (RTL) sensitivity change in quartz

Ganzawa, Yoshihiro

doi:10.1016/j.radmeas.2010.07.012

Cited by 3 publications

(1 citation statement)

References 17 publications

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“…Non-bridging oxygen-hole centres or peroxy radicals have been proposed to be responsible for RTL in quartz , but a certain correlation between a specific defect and this emission could not yet be established. In previous studies, the RTL signal of (volcanic) quartz showed distinguished features such as minor sensitivity changes in the course of repeated heating and irradiation (Yawata and Hashimoto, 2004;Ganzawa et al, 2005;Ganzawa, 2010;Zöller et al, 2014;Richter et al, 2017), high dose saturation levels (>1.5 kGy; Pilleyre et al, 1992;Fattahi and Stokes, 2000a;Hong et al, 2008;Ganzawa and Maeda, 2009) and the existence of a signal component with sufficient thermal stability for dating on Quaternary timescales (Fattahi and Stokes, 2000a;Ganzawa et al, 2005). More comprehensive reviews on RTL properties of quartz are given by Miallier et al (1991), Fattahi and Stokes (2003), Stokes and Fattahi (2003) and Hashimoto (2008).…”

Section: Volcanic Quartzmentioning

confidence: 99%

Direct and indirect luminescence dating of tephra: A review

Bösken

Schmidt

2019

J Quaternary Science

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In Quaternary studies, tephras are widely used as marker horizons to correlate geological deposits. Therefore, accurate and precise dating is crucial. Among radiometric dating techniques, luminescence dating has the potential to date tephra directly using glass shards, volcanic minerals that formed during the eruption or mineral fragments that originate from the shattered country rock. Moreover, sediments that frame the tephra can be dated to attain an indirect age bracket. A review of numerous luminescence dating studies highlights the method's potential and challenges. While reliable direct dating of volcanic quartz and feldspar as a component in tephra is still methodically difficult mainly due to thermal and athermal signal instability, red thermoluminescence of volcanic quartz and the far-red emission of volcanic feldspar have been used successfully. Furthermore, the dating of xenolithic quartz within tephra shows great potential. Numerous studies date tephra successfully indirectly. Dating surrounding sediments is generally straightforward as long as samples are not taken too close to the tephra horizons. Here, issues arise from the occurrence of glass shards within the sediments or unreliable determination of dose rates. This includes relocation of radioelements, mixing of tephra into the sediment and disregarding different dose rates of adjacent material.

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Section: Volcanic Quartzmentioning

confidence: 99%

Direct and indirect luminescence dating of tephra: A review

Bösken

Schmidt

2019

J Quaternary Science

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Accurate-parametric SAR-TL dating protocols for older sediments using quartz

Wang

Zhang

et al. 2022

Applied Radiation and Isotopes

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Luminescence Characteristics of Intraplate-Derived Olivines

2021

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Olivine has so far attracted limited attention as a potential luminescence dosimeter. In particular, there is a dearth of information concerning the luminescence properties of geochemically characterised, pure olivine samples. Six well-characterised olivine samples from four intraplate settings are investigated in this study, including emission wavelengths and intensities, growth of signal with absorbed dose, signal stability and recovery of a given dose with a single aliquot regeneration (SAR) protocol. All tested olivines share a low-temperature (90–100°C) UV/blue thermoluminescence (TL) peak, and five of six samples also produce a low-temperature red/yellow emission. Higher temperature TL peaks, which would be thermally stable over geological timescales and could be used for dating, are rarely observed at low doses (c. 46 Gy), but detectable though dim at significantly higher doses (c. 460 Gy). Photostimulated luminescence (PSL) emissions are very dim, but reliably detected emissions are stimulated by blue, yellow and infrared (IR) light. PSL yielded generally successful dose recovery results; however, all tested signals are prone to significant anomalous fading and complex thermal transfer between unbleachable and bleachable traps. These characteristics must be addressed if olivine is to be used as a natural dosimeter for luminescence dating. Given the variety of luminescence responses, it appears that olivine samples in future dating work may need to be individually characterised prior to measurement.

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Red thermoluminescence (RTL) sensitivity change in quartz

Cited by 3 publications

References 17 publications

Direct and indirect luminescence dating of tephra: A review

Direct and indirect luminescence dating of tephra: A review

Accurate-parametric SAR-TL dating protocols for older sediments using quartz

Luminescence Characteristics of Intraplate-Derived Olivines

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