Assessing the influence of the cavity temperature on the ESR signal of the Aluminum center in quartz grains extracted from sediment

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Author(s)
Duval, Mathieu
Guilarte Moreno, Veronica
Griffith University Author(s)
Year published
2012
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Show full item recordAbstract
In the present work, we briefly assess the potential
of the Bruker Digital Temperature control system for
ESR dosimetry/dating purpose and try to quantify the
influence of the cavity temperature on the ESR signal
of Aluminum center.
Our results also show that it is possible to reach a
consistent level of repeatability in the ESR
measurements with the Bruker Variable Temperature
Unit (VTU) system, not only in terms of ESR
intensities, but also for the equivalent dose (DE)
values. As expected, our results show a strong
influence of the temperature on the ESR signal of
Aluminum center. Given that dependence, it is
recommended ...
View more >In the present work, we briefly assess the potential of the Bruker Digital Temperature control system for ESR dosimetry/dating purpose and try to quantify the influence of the cavity temperature on the ESR signal of Aluminum center. Our results also show that it is possible to reach a consistent level of repeatability in the ESR measurements with the Bruker Variable Temperature Unit (VTU) system, not only in terms of ESR intensities, but also for the equivalent dose (DE) values. As expected, our results show a strong influence of the temperature on the ESR signal of Aluminum center. Given that dependence, it is recommended to apply some corrections factors, especially when working around 90 K, in order to remove the systematic bias that may be induced by slight cavity temperature variations occurring during the measurement of a sample. However, despite the previous observations, there is no apparent impact of the temperature on the calculated DE, whatever the cavity temperature between 90 and 110 K.
View less >
View more >In the present work, we briefly assess the potential of the Bruker Digital Temperature control system for ESR dosimetry/dating purpose and try to quantify the influence of the cavity temperature on the ESR signal of Aluminum center. Our results also show that it is possible to reach a consistent level of repeatability in the ESR measurements with the Bruker Variable Temperature Unit (VTU) system, not only in terms of ESR intensities, but also for the equivalent dose (DE) values. As expected, our results show a strong influence of the temperature on the ESR signal of Aluminum center. Given that dependence, it is recommended to apply some corrections factors, especially when working around 90 K, in order to remove the systematic bias that may be induced by slight cavity temperature variations occurring during the measurement of a sample. However, despite the previous observations, there is no apparent impact of the temperature on the calculated DE, whatever the cavity temperature between 90 and 110 K.
View less >
Journal Title
Ancient TL
Volume
30
Issue
2
Copyright Statement
© 2012 East Carolina University. The attached file is reproduced here in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.
Subject
Geochronology
Geochemistry
Geology