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Exploring new mass regions with the ISOLTRAP spectrometer

Abstract

First direct mass measurements on rare earth isotopes around 146Gd have been performed with the Penning trap mass spectrometer ISOLTRAP at ISOLDE/CERN. More than 40 isotopes of the elements Pr, Nd, Pm, Sm, Eu, Dy and Ho have been measured with an accuracy of typically 1 × 10-7. In the case of 141Sm isomeric and ground state (ΔE = 175 keV) were resolved. Since isobaric contaminations are present in the ISOLDE beam, these measurements on rare earth isotopes became only possible after the installation of a new cooler trap which acts an isobar separator.

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Beck, D., Ames, F., Audi, G. et al. Exploring new mass regions with the ISOLTRAP spectrometer. Hyperfine Interactions 108, 219–225 (1997). https://doi.org/10.1023/A:1012658628740

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  • DOI: https://doi.org/10.1023/A:1012658628740

Keywords

  • Mass Measurement
  • Cyclotron Frequency
  • Accurate Mass Measurement
  • Ground State Mass
  • Cool Trap