Penning trap mass measurements utilizing highly charged ions as a path to benchmark isospin-symmetry breaking corrections in Rb-74

S. Malbrunot-Ettenauer T. Brunner U. Chowdhury T. Gallant A. V. Simon V. M. Brodeur A. Chaudhuri E. Mane C. Simon M. C. Andreoiu G. Audi 1 R. Crespo Lopez-Urrutia J. P. Delheij G. Gwinner A. Lapierre D. Lunney 1 R. Pearson M. R. Ringle J. Ullrich J. Dilling
1 CSNSM SNO
CSNSM - Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse, CSNSM - Centre de Sciences Nucléaires et de Sciences de la Matière : UMR8609
Abstract : Penning trap mass measurements of neutron-deficient Rb isotopes have been performed at TRIUMF's Ion Trap for Atomic and Nuclear Science (TITAN) facility by utilizing highly charged ions (HCIs). As imperative for a new approach with significant gain in measurement precision, experimental procedures, and systematic uncertainties are discussed in detail. Among the investigated nuclides, the superallowed nuclear beta emitter Rb-74 will especially benefit from the advantage offered by HCI because the limited attainable precision owing to its short half-life (T-1/2 = 65 ms) represents a challenge for conventional Penning trap mass spectrometry. Motivated by an updated Q(EC) value for Rb-74 of 10 416.8(3.9) keV and its large isospin-symmetry breaking corrections, we present a new test to benchmark the consistency between theoretical models of isospin-symmetry breaking corrections in superallowed decays, the conserved vector current hypothesis, and experimental data.
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Article dans une revue
Physical Review C, American Physical Society, 2015, 91 (issue 4), pp.045504. 〈10.1103/PhysRevC.91.045504〉
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Contributeur : Emilie Bonnardel <>
Soumis le : lundi 4 mai 2015 - 16:38:12
Dernière modification le : jeudi 11 janvier 2018 - 06:26:24

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S. Malbrunot-Ettenauer, T. Brunner, U. Chowdhury, T. Gallant A., V. Simon V., et al.. Penning trap mass measurements utilizing highly charged ions as a path to benchmark isospin-symmetry breaking corrections in Rb-74. Physical Review C, American Physical Society, 2015, 91 (issue 4), pp.045504. 〈10.1103/PhysRevC.91.045504〉. 〈in2p3-01148079〉

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