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High resolution spectroscopy of the hyperfine structure splitting in 97,99Tc

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Abstract

Resonance ionization mass spectrometry is an efficient tool for detecting trace amounts of long-lived radio-isotopes in environmental samples. For absolute quantification a tracer with identical atomic properties and chemical behavior is needed to prevent a possible dependency onto the absolute efficiency for the analytical method. For an application in 99Tc, the isotope 97Tc could serve as a potential tracer. Therefore the optical transitions of an efficient ionization scheme for technetium were investigated for the two odd mass isotopes 97,99Tc, both with a nuclear spin of I=\(\frac {9}{2}\). Using a pulsed, single mode laser with narrow bandwidth, the hyperfine structures (HFS) of two transitions were fully resolved. The observed isotope shift is small in comparison to the width of the hyperfine structure splitting. This is ideal for the application of 97Tc as tracer isotope for 99Tc quantification. The evaluation of the observed HFS splitting results in a first experimental value for the magnetic dipole for 97Tc of μ=+5.82(9) μ N .

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Author notes

  1. Jose L. Henares

    Present address: Centre d’Etudes Nucléaires de Bordeaux Gradignan, 19 Chemin du Solarium, Gradignan, France

Authors and Affiliations

  1. Instituut voor Kern- en Stralingsfysica, KU Leuven, B-3001, Leuven, Belgium

    Sebastian Raeder

  2. Helmholtz-Institut Mainz, 55128, Mainz, Germany

    Sebastian Raeder

  3. Institut für Physik, Johannes Gutenberg Universität, 55128, Mainz, Germany

    Tobias Kron, Reinhard Heinke, Marcel Trümper & Klaus Wendt

  4. GANIL, BP 55027, 14076 Caen Cedex 5, 55128, France

    Jose L. Henares & Nathalie Lecesne

  5. Institut für Kernchemie, Johannes Gutenberg Universität, 55128, Mainz, Germany

    Pascal Schönberg

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  1. Sebastian Raeder
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  2. Tobias Kron
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  3. Reinhard Heinke
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  7. Marcel Trümper
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  8. Klaus Wendt
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Corresponding author

Correspondence to Sebastian Raeder.

Additional information

This article is part of the Topical Collection on Proceedings of the 10th International Workshop on Application of Lasers and Storage Devices in Atomic Nuclei Research: “Recent Achievements and Future Prospects” (LASER 2016), Poznań, Poland, 16–19 May 2016

Edited by Krassimira Marinova, Magdalena Kowalska and Zdzislaw Błaszczak

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Raeder, S., Kron, T., Heinke, R. et al. High resolution spectroscopy of the hyperfine structure splitting in 97,99Tc. Hyperfine Interact 238, 15 (2017). https://doi.org/10.1007/s10751-016-1389-z

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  • DOI: https://doi.org/10.1007/s10751-016-1389-z

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