Abstract
This work presents a recalibration of U-doped standard glasses using natural uranium thin films to be used as most dedicated neutron monitor for fission-track dating. The recalibrated U-doped glasses were used to determine fission-track ages in apatite samples from Brazilian alkaline formations (Alto Paranaíba) and standard Durango apatite. Samples were irradiated in two nuclear reactors with different characteristics and the results were compared. For well-thermalized neutron facility, metal activation monitor was also used. The ages of Alto Paranaíba arch and Durango apatite agree with those determined by other radiometric dating methods and metal activation monitors. These results suggest that the presented recalibration is suitable to be used routinely for fission-track dating studies even in a non-well thermalized neutron facility.
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Acknowledgments
This work was part of Soares’s PhD research and was financially supported by Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq). We thank Christina Trautmann for her constructive comments and the heavy ions irradiation. Finally we dedicate this paper to Pedro José Iunes (in memorian) for his contributions within neutron dosimeter based on U-thin films.
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Soares, C.J., Guedes, S., Curvo, E.A.C. et al. Recalibration of U-doped standard glasses through uranium thin film for neutron-fluence measurements. J Radioanal Nucl Chem 302, 17–26 (2014). https://doi.org/10.1007/s10967-014-3296-6
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DOI: https://doi.org/10.1007/s10967-014-3296-6