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A multi-reflection time-of-flight mass separator for isobaric purification of radioactive ion beams

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Abstract

A multi-reflection time-of-flight mass separator (MR-ToF-MS) for the enhancement of the performance of the Penning-trap mass spectrometer ISOLTRAP at the on-line isotope separator ISOLDE/CERN has been built and investigated at an off-line test facility. The MR-ToF-MS consists of two ion-optical mirrors between which oscillating ions are separated according to their different mass-over-charge ratios m/q. Flight paths of several hundreds of meters are folded to an apparatus length of less than one meter. Preliminary tests resulted in a mass-resolving power of up to m/Δm ≈ 80,000, and the separation was demonstrated for the isobaric ions CO +  and \(\mathrm{N}_2^+\). The MR-ToF-MS will support the existing purification methods of ISOLTRAP and will extend the access to nuclides produced with high isobaric contamination yields at the ISOLDE facility.

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Authors and Affiliations

  1. Institute of Physics, University of Greifswald, Felix-Hausdorff-Strasse 6, 17489, Greifswald, Germany

    Robert N. Wolf, Gerrit Marx & Lutz Schweikhard

  2. Institute for Environmental Physics, University of Heidelberg, Im Neuenheimer Feld 229, 69120, Heidelberg, Germany

    Markus Eritt

Authors
  1. Robert N. Wolf
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  2. Markus Eritt
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  3. Gerrit Marx
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  4. Lutz Schweikhard
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Correspondence to Robert N. Wolf.

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Wolf, R.N., Eritt, M., Marx, G. et al. A multi-reflection time-of-flight mass separator for isobaric purification of radioactive ion beams. Hyperfine Interact 199, 115–122 (2011). https://doi.org/10.1007/s10751-011-0306-8

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