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Investigation of the low-lying isomer in 229Th by collinear laser spectroscopy

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LASER 2006

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Abstract

A new ion beam of 229Th is available at the Jyväsklyä IGISOL facility, produced from the α decay of 233U. A small branching ratio (≈2%) is believed to populate the inferred low-lying (5.5 eV) isomeric state in 229Th. A laser ionization scheme is currently being developed to improve the yield of 229Th from the source. The ion source uses a novel electric field configuration for fast and efficient extraction of α-recoils and is able to provide beams of short lived (τ≥30 ms) radioactive nuclei. Identification of the isomeric state by collinear laser spectroscopy will reduce the lower lifetime limit of the state and provide the first direct evidence for its existence.

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Authors and Affiliations

  1. Department of Physics and Astronomy, Manchester University, Manchester, UK

    B. Tordoff, J. Billowes, P. Campbell & B. Cheal

  2. School of Physics and Astronomy, University of Birmingham, Birmingham, UK

    D. H. Forest & G. Tungate

  3. Department of Physics, University of Jyväskylä, Jyväskylä, Finland

    T. Kessler, I. D. Moore & J. Äystö

  4. Department of Physics, McGill University, Montréal, Canada

    J. Lee

  5. Petersburg Nuclear Physics Institute, Gatchina, Russia

    A. Popov

Authors
  1. B. Tordoff
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  2. J. Billowes
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  3. P. Campbell
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  4. B. Cheal
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  5. D. H. Forest
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  6. T. Kessler
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  7. J. Lee
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  8. I. D. Moore
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  9. A. Popov
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  10. G. Tungate
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  11. J. Äystö
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Corresponding author

Correspondence to B. Tordoff .

Editor information

Editors and Affiliations

  1. Adam Mickiewicz University, Poznań, Poland

    Z. Błaszczak

  2. Joint Institute for Nuclear Research, Dubna, Russia

    B. Markov  & K. Marinova  & 

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Tordoff, B. et al. (2007). Investigation of the low-lying isomer in 229Th by collinear laser spectroscopy. In: Błaszczak, Z., Markov, B., Marinova, K. (eds) LASER 2006. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-71113-1_19

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  • DOI: https://doi.org/10.1007/978-3-540-71113-1_19

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-71112-4

  • Online ISBN: 978-3-540-71113-1

  • eBook Packages: Physics and AstronomyPhysics and Astronomy (R0)

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