Testing single aliquot regenerative dose (SAR) protocols for violet stimulated luminescence

Debra Colarossi; Melissa Chapot; G. A. T. Duller; H. M. Roberts

doi:10.1016/j.radmeas.2018.02.005

Testing single aliquot regenerative dose (SAR) protocols for violet stimulated luminescence

Debra Colarossi, Melissa Chapot, G. A. T. Duller, H. M. Roberts

Department of Geography and Earth Sciences

Max Planck Institute for Evolutionary Anthropology

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

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Abstract

Basic assumptions of the single aliquot regenerative dose (SAR) protocol are tested using the violet stimulated luminescence (VSL) signal from quartz. The VSL signal is shown to be reduced to a sufficiently low background level between SAR steps, and the SAR protocol appears to adequately correct for sensitivity changes during measurement. The VSL SAR protocol can recover a large (405 Gy) laboratory beta dose within uncertainties, however the mean value for the dose recovery ratio is commonly 0.8 or less. This poor behaviour is echoed in the measurements of equivalent dose (De) for a sample with an expected De of ∼354 Gy, which underestimates De by 50–70%. Further investigations are required to understand the mechanisms underlying these underestimations in VSL SAR De values

Original language	English
Pages (from-to)	104-109
Number of pages	6
Journal	Radiation Measurements
Volume	120
Early online date	23 Feb 2018
DOIs	https://doi.org/10.1016/j.radmeas.2018.02.005
Publication status	Published - 15 Dec 2018

Keywords

violet stimulated luminescence (VSL)
dose recovery
quartz
SAR protocol
sensitivity change
Violet stimulated luminescence (VSL)
Sensitivity change
Quartz
Dose recovery

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Testing single aliquot regenerative dose (SAR) protocols for violet stimulated luminescenceAccepted author manuscript, 850 KB

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title = "Testing single aliquot regenerative dose (SAR) protocols for violet stimulated luminescence",

abstract = "Basic assumptions of the single aliquot regenerative dose (SAR) protocol are tested using the violet stimulated luminescence (VSL) signal from quartz. The VSL signal is shown to be reduced to a sufficiently low background level between SAR steps, and the SAR protocol appears to adequately correct for sensitivity changes during measurement. The VSL SAR protocol can recover a large (405 Gy) laboratory beta dose within uncertainties, however the mean value for the dose recovery ratio is commonly 0.8 or less. This poor behaviour is echoed in the measurements of equivalent dose (De) for a sample with an expected De of ∼354 Gy, which underestimates De by 50–70%. Further investigations are required to understand the mechanisms underlying these underestimations in VSL SAR De values",

keywords = "violet stimulated luminescence (VSL), dose recovery, quartz, SAR protocol, sensitivity change, Violet stimulated luminescence (VSL), Sensitivity change, Quartz, Dose recovery",

author = "Debra Colarossi and Melissa Chapot and Duller, {G. A. T.} and Roberts, {H. M.}",

note = "Funding Information: The St Paul's samples were collected while DC was in receipt of a Doctoral Career Development Scholarship funded by Aberystwyth University . Additional fieldwork funding was provided by the Geological Society of South Africa (GSSA) Research, Education and Investment Fund and the Quaternary Research Association (QRA) New Research Workers' Award. The authors wish to thank Greg Botha and Stephen Tooth for assisting with sample collection and an anonymous reviewer for comments which helped improve this paper. Copyright: Copyright 2019 Elsevier B.V., All rights reserved.",

year = "2018",

month = dec,

day = "15",

doi = "10.1016/j.radmeas.2018.02.005",

language = "English",

volume = "120",

pages = "104--109",

journal = "Radiation Measurements",

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AU - Colarossi, Debra

AU - Chapot, Melissa

AU - Duller, G. A. T.

AU - Roberts, H. M.

N1 - Funding Information: The St Paul's samples were collected while DC was in receipt of a Doctoral Career Development Scholarship funded by Aberystwyth University . Additional fieldwork funding was provided by the Geological Society of South Africa (GSSA) Research, Education and Investment Fund and the Quaternary Research Association (QRA) New Research Workers' Award. The authors wish to thank Greg Botha and Stephen Tooth for assisting with sample collection and an anonymous reviewer for comments which helped improve this paper. Copyright: Copyright 2019 Elsevier B.V., All rights reserved.

PY - 2018/12/15

Y1 - 2018/12/15

N2 - Basic assumptions of the single aliquot regenerative dose (SAR) protocol are tested using the violet stimulated luminescence (VSL) signal from quartz. The VSL signal is shown to be reduced to a sufficiently low background level between SAR steps, and the SAR protocol appears to adequately correct for sensitivity changes during measurement. The VSL SAR protocol can recover a large (405 Gy) laboratory beta dose within uncertainties, however the mean value for the dose recovery ratio is commonly 0.8 or less. This poor behaviour is echoed in the measurements of equivalent dose (De) for a sample with an expected De of ∼354 Gy, which underestimates De by 50–70%. Further investigations are required to understand the mechanisms underlying these underestimations in VSL SAR De values

AB - Basic assumptions of the single aliquot regenerative dose (SAR) protocol are tested using the violet stimulated luminescence (VSL) signal from quartz. The VSL signal is shown to be reduced to a sufficiently low background level between SAR steps, and the SAR protocol appears to adequately correct for sensitivity changes during measurement. The VSL SAR protocol can recover a large (405 Gy) laboratory beta dose within uncertainties, however the mean value for the dose recovery ratio is commonly 0.8 or less. This poor behaviour is echoed in the measurements of equivalent dose (De) for a sample with an expected De of ∼354 Gy, which underestimates De by 50–70%. Further investigations are required to understand the mechanisms underlying these underestimations in VSL SAR De values

KW - violet stimulated luminescence (VSL)

KW - dose recovery

KW - quartz

KW - SAR protocol

KW - sensitivity change

KW - Violet stimulated luminescence (VSL)

KW - Sensitivity change

KW - Quartz

KW - Dose recovery

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DO - 10.1016/j.radmeas.2018.02.005

M3 - Article

SN - 1350-4487

VL - 120

SP - 104

EP - 109

JO - Radiation Measurements

JF - Radiation Measurements

ER -

Testing single aliquot regenerative dose (SAR) protocols for violet stimulated luminescence

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Keywords

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