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

MPS-Authors
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Simon,  Vanessa V.
TRIUMF;
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;
Department of Physics and Astronomy, Ruprecht-Karls-Universität;

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Crespo López-Urrutia,  José Ramón
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

External Resource

http://link.aps.org/doi/10.1103/PhysRevC.91.045504
(Publisher version)

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Citation

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


Cite as: https://hdl.handle.net/11858/00-001M-0000-0026-BDAE-3
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 β emitter 74Rb74 will especially benefit from the advantage offered by HCI because the limited attainable precision owing to its short half-life (T1/2=65 ms) represents a challenge for conventional Penning trap mass spectrometry. Motivated by an updated QEC value for 74Rb74 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.