Journal
INTERNATIONAL JOURNAL OF MASS SPECTROMETRY
Volume 349, Issue -, Pages 123-133Publisher
ELSEVIER
DOI: 10.1016/j.ijms.2013.03.020
Keywords
MR-ToF mass separator; Isobar purification; Radioactive ion beam; ISOLTRAP; Penning trap mass spectrometer; Mass of Eu-137 nuclide
Funding
- German Federal Ministry for Education and Research (BMBF) [06GF9102, 05P12HGCI1, 05P12HGFNE, 06DD9054]
- Max-Planck Society
- IMPRS-PTFS, the European Union seventh framework through ENSAR [262010]
- French [IN2P3]
- Nuclear Astrophysics Virtual Institute (NAVI) of the Helmholtz Association
- ISOLDE Collaboration and technical teams
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The online precision mass spectrometer ISOLTRAP at ISOLDE/CERN was recently upgraded by adding a multi-reflection time-of-flight mass separator/spectrometer (MR-ToF MS) between the linear radio-frequency ion trap and the two Penning traps already in place. As a mass separator, the MR-ToF device has improved significantly ISOLTRAP's capability of purification of contaminated ion beams. In addition, the MR-ToF MS can be operated as a mass spectrometer, either to analyze the ISOLDE ion beam or for precision mass measurements of nuclides that are shorter-lived or that have lower yields than those accessible for Penning-trap mass spectrometry. The MR-ToF MS and corresponding components, its integration into ISOLTRAP, and its various operation modes are reviewed. Furthermore, a precision measurement of the Eu-137 mass is presented, determined with the help of the MR-ToF device as a mass separator. (C) 2013 Elsevier B.V. All rights reserved.
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