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

Journal Article · Fri Dec 30 00:00:00 EST 2011 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.107.272501· OSTI ID:21612586

Ettenauer, S; Gallant, A T; Dilling, J ^[1]; Simon, M C; Chaudhuri, A; Mane, E; Delheij, P; Pearson, M R ^[1]; Brunner, T ^[1]; Chowdhury, U ^[1]; Simon, V V ^[1]; Brodeur, M ^[1]; Andreoiu, C ^[2]; Audi, G ^[3]; Lopez-Urrutia, J R. Crespo; Ullrich, J ^[4]; Gwinner, G ^[5]; Lapierre, A ^[1]; Lunney, D ^[1]; Ringle, R ^[6]

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1. TRIUMF, 4004 Wesbrook Mall, Vancouver, BC V6T 2A3 (Canada)
2. Department of Chemistry, Simon Fraser University, Burnaby, BC V5A 1S6 (Canada)
3. CSNSM-IN2P3-CNRS, Universite Paris 11, 91405 Orsay (France)
4. Max-Planck-Institut fuer Kernphysik, Saupfercheckweg 1, 69117 Heidelberg (Germany)
5. Dept. of Physics and Astronomy, Univ. of Manitoba, Winnipeg, MB R3T 2N2 (Canada)
6. National Superconducting Cyclotron Lab., Michigan State Univ., East Lansing, Michigan 48824 (United States)

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=8-12+ 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 {beta} emitter {sup 74}Rb (T{sub 1/2}=65 ms). The determination of its atomic mass and an improved Q{sub EC} value are presented.

• OSTI ID: 21612586
• Journal Information: Physical Review Letters, Vol. 107, Issue 27; Other Information: DOI: 10.1103/PhysRevLett.107.272501; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
CHARGE STATES
ELECTRON BEAMS
EXCITATION
IONS
NEUTRONS
RUBIDIUM 74
TRAPS
BARYONS
BEAMS
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CHARGED PARTICLES
ELEMENTARY PARTICLES
ENERGY-LEVEL TRANSITIONS
FERMIONS
HADRONS
INTERMEDIATE MASS NUCLEI
ISOTOPES
LEPTON BEAMS
MILLISECONDS LIVING RADIOISOTOPES
NUCLEI
NUCLEONS
ODD-ODD NUCLEI
PARTICLE BEAMS
RADIOISOTOPES
RUBIDIUM ISOTOPES