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Increasing the dynamic range for the analysis of boron in PGAA

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Abstract

Prompt gamma activation analysis (PGAA) is especially sensitive for elements with high neutron-capture cross sections, like boron, which can be detected down to a level of ng/g. However, if it is a major component, the high count rate from its signal will distort the spectra, making the evaluation difficult. A lead attenuator was introduced in front of the HPGe-detector to reduce low-energy gamma radiation and specifically the boron gamma rays reaching the detector, whose thickness was found to be optimal at 10 mm. Detection efficiencies with and without the lead attenuator were compared, and it was shown that the dynamic range of the PGAA technique was significantly increased. The method was verified with the analyses of stoichiometric compounds: TiB2, NiB, PVC, Alborex, and Alborite.

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Acknowledgments

The authors gratefully acknowledge the helpful discussions with László Szentmiklósi regarding high count-rate gamma spectroscopy.

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Authors and Affiliations

  1. Laboratory for Radiochemistry and Environmental Chemistry, Paul Scherrer Institute, 5232, Villigen-PSI, Switzerland

    Stefan Söllradl & Andreas Türler

  2. Department of Chemistry & Biochemistry, University of Berne, Freiestrasse 3, 3012, Bern, Switzerland

    Stefan Söllradl & Andreas Türler

  3. Heinz Maier-Leibnitz Zentrum (MLZ), Technische Universität München, Lichtenbergstr. 1, 85748, Garching, Germany

    Stefan Söllradl, Zsolt Révay, Petra Kudejova & Lea Canella

  4. Fachbereich Geowissenschaften, Universität Bremen, Klagenfurter Str, 28357, Bremen, Germany

    Hanna Lührs

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  1. Stefan Söllradl
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  2. Hanna Lührs
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  3. Zsolt Révay
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  4. Petra Kudejova
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  5. Lea Canella
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  6. Andreas Türler
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Correspondence to Stefan Söllradl.

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Söllradl, S., Lührs, H., Révay, Z. et al. Increasing the dynamic range for the analysis of boron in PGAA. J Radioanal Nucl Chem 298, 2069–2073 (2013). https://doi.org/10.1007/s10967-013-2739-9

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  • DOI: https://doi.org/10.1007/s10967-013-2739-9

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