Hyperfine Interactions

, Volume 199, Issue 1–3, pp 115–122 | Cite as

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

  • Robert N. Wolf
  • Markus Eritt
  • Gerrit Marx
  • Lutz Schweikhard
Article

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 mm ≈ 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.

Keywords

Isobaric contamination Isobar separator Multi-reflection time-of-flight mass separator ISOLTRAP Precision mass measurement Exotic nuclei 

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Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  • Robert N. Wolf
    • 1
  • Markus Eritt
    • 2
  • Gerrit Marx
    • 1
  • Lutz Schweikhard
    • 1
  1. 1.Institute of PhysicsUniversity of GreifswaldGreifswaldGermany
  2. 2.Institute for Environmental PhysicsUniversity of HeidelbergHeidelbergGermany

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