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Production of clean rare isotope beams at TRIUMF ion guide laser ion source

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Abstract

Hot cavity resonant ionization laser ion sources (RILIS) provide a multitude of radioactive ion beams with high ionization efficiency and element selective ionization. However, in hot cavity RILIS there still remains isobaric contamination in the extracted beam from surface ionized species. An ion guide-laser ion source (IG-LIS) has been implemented at TRIUMF’s isotope separator and accelerator (ISAC) facility that decouples the hot isotope production region from the laser ionization volume. A number of IG-LIS runs have been conducted to provide isobar free radioactive ion beams for experiments. Isobar suppression of up to 106 has been achieved, e.g. for Mg, Cd, Ga and other isotopes, IG-LIS however, still suffers from an intensity loss of 50-100× as compared to hot cavity RILIS. The work towards operating the IG-LIS in an optimized fashion and possible design improvements to the operational prototype for efficient and robust (radiation hard) on-line operation and recent SIMION ion optics simulation results as well as the ongoing development status of the IG-LIS are presented.

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Acknowledgements

The work has been funded by TRIUMF under a contribution from National Research Council of Canada (NRC) and through a Natural Sciences and Engineering Research Council of Canada (NSERC) Discovery Grant (SAP-IN-2017-00039). M. Mostamand acknowledges funding through the University of Manitoba Graduate Fellowship.

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Authors and Affiliations

  1. TRIUMF- Canada’s Particle Accelerator Center, Vancouver, BC, V6T 2A3, Canada

    Maryam Mostamand, Ruohong Li, Jekabs Romans, Friedhelm Ames, Peter Kunz, Anders Mjϕs & Jens Lassen

  2. Department of Physics & Astronomy, University of Manitoba, Winnipeg, MB, R3T 2N2, Canada

    Maryam Mostamand & Jens Lassen

  3. Department of Astronomy and Physics, Saint Mary’s University, Halifax, NS, B3H 3C3, Canada

    Friedhelm Ames

  4. Department of Physics, Simon Fraser University, Burnaby, BC, V5A 1S6, Canada

    Peter Kunz & Jens Lassen

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  1. Maryam Mostamand
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  2. Ruohong Li
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  3. Jekabs Romans
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  4. Friedhelm Ames
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  5. Peter Kunz
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  6. Anders Mjϕs
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  7. Jens Lassen
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Correspondence to Maryam Mostamand.

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This article is part of the Topical Collection on Proceedings of PLATAN 2019, 1st International Conference, Merger of the Poznan Meeting on Lasers and Trap** Devices in Atomic Nuclei Research and the International Conference on Laser Probing, Mainz, Germany 19-24 May 2019

Edited by Krassimira Marinova, Michael Block, Klaus D.A. Wendt and Magdalena Kowalska

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Mostamand, M., Li, R., Romans, J. et al. Production of clean rare isotope beams at TRIUMF ion guide laser ion source. Hyperfine Interact 241, 36 (2020). https://doi.org/10.1007/s10751-020-1704-6

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  • DOI: https://doi.org/10.1007/s10751-020-1704-6

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