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First Use of High Charge States for Mass Measurements of Short-Lived Nuclides in a Penning Trap

S. Ettenauer, M. C. Simon, A. T. Gallant, T. Brunner, U. Chowdhury, V. V. Simon, M. Brodeur, A. Chaudhuri, E. Mané, C. Andreoiu, G. Audi, J. R. Crespo López-Urrutia, P. Delheij, G. Gwinner, A. Lapierre, D. Lunney, M. R. Pearson, R. Ringle, J. Ullrich, and J. Dilling
Phys. Rev. Lett. 107, 272501 – Published 29 December 2011

Abstract

Penning trap mass measurements of short-lived nuclides have been performed for the first time with highly charged ions, using the TITAN facility at TRIUMF. Compared to singly charged ions, this provides an improvement in experimental precision that scales with the charge state q. Neutron-deficient Rb isotopes have been charge bred in an electron beam ion trap to q=812+ prior to injection into the Penning trap. In combination with the Ramsey excitation scheme, this unique setup creating low energy, highly charged ions at a radioactive beam facility opens the door to unrivaled precision with gains of 1–2 orders of magnitude. The method is particularly suited for short-lived nuclides such as the superallowed β emitter Rb74 (T1/2=65ms). The determination of its atomic mass and an improved QEC value are presented.

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  • Received 11 September 2011

DOI:https://doi.org/10.1103/PhysRevLett.107.272501

© 2011 American Physical Society

Authors & Affiliations

S. Ettenauer1,2,*, M. C. Simon1, A. T. Gallant1,2, T. Brunner1,3, U. Chowdhury1,4, V. V. Simon1,5,6, M. Brodeur1,2,7, A. Chaudhuri1, E. Mané1, C. Andreoiu8, G. Audi9, J. R. Crespo López-Urrutia5, P. Delheij1, G. Gwinner4, A. Lapierre1,7, D. Lunney1,9, M. R. Pearson1, R. Ringle7, J. Ullrich5, and J. Dilling1,2

  • 1TRIUMF, 4004 Wesbrook Mall, Vancouver, BC V6T 2A3, Canada
  • 2Department of Physics and Astronomy, University of British Columbia, Vancouver, BC V6T 1Z1, Canada
  • 3Physik Department E12, Technische Universität München, D-85748 Garching, Germany
  • 4Department of Physics and Astronomy, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
  • 5Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
  • 6Ruprecht-Karls-Universität, Heidelberg, Germany
  • 7National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
  • 8Department of Chemistry, Simon Fraser University, Burnaby, BC V5A 1S6, Canada
  • 9CSNSM-IN2P3-CNRS, Université Paris 11, 91405 Orsay, France

  • *Corresponding author. sette@triumf.ca

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Vol. 107, Iss. 27 — 30 December 2011

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