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High-resolution in-source laser spectroscopy in perpendicular geometry

Development and application of the PI-LIST

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Abstract

Operation of the novel laser ion source unit LIST (Laser Ion Source and Trap), operating at the on-line radioactive ion beam facility ISOLDE at CERN allowed for the production of ultra-pure beams of exotic isotopes far-off stability as well as direct isobar-free laser spectroscopy, giving access to the study of atomic and nuclear properties of so far inaccessible nuclides. We present a specific upgrade and adaption of the LIST targeted for high resolution spectroscopy with a Doppler-reduced perpendicular atom - laser beam geometry. With this PI-LIST (Perpendicularly Illuminated Laser Ion Source and Trap) setup, experimental linewidths below 100 MHz could be demonstrated in optical laser spectroscopy off-line, applying a pulsed injection-locked high repetition rate Ti:sapphire laser. A dual repeller configuration ensured highest suppression of isobaric interferences and almost background-free measurements on small samples in the order of 1011 atoms.

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Authors and Affiliations

  1. Institut für Physik, Universität Mainz, 55099, Mainz, Germany

    R. Heinke, T. Kron, M. Trümper, C. Weichhold & K. Wendt

  2. Institut für Kernchemie, Universität Mainz, 55099, Mainz, Germany

    T. Reich & P. Schönberg

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

    S. Raeder

Authors
  1. R. Heinke
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  2. T. Kron
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  3. S. Raeder
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  4. T. Reich
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  5. P. Schönberg
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  6. M. Trümper
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  7. C. Weichhold
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  8. K. Wendt
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Corresponding author

Correspondence to R. Heinke.

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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Heinke, R., Kron, T., Raeder, S. et al. High-resolution in-source laser spectroscopy in perpendicular geometry. Hyperfine Interact 238, 6 (2017). https://doi.org/10.1007/s10751-016-1386-2

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  • DOI: https://doi.org/10.1007/s10751-016-1386-2

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