High-precision branching-ratio measurement for the superallowed β+ emitter 74Rb
نویسندگان
چکیده
R. Dunlop,1,* G. C. Ball,2 J. R. Leslie,3 C. E. Svensson,1 I. S. Towner,4 C. Andreoiu,5 S. Chagnon-Lessard,1 A. Chester,5 D. S. Cross,5 P. Finlay,1,† A. B. Garnsworthy,2 P. E. Garrett,1 J. Glister,2 G. Hackman,2 B. Hadinia,1 K. G. Leach,1 E. T. Rand,1 K. Starosta,5 E. R. Tardiff,2 S. Triambak,2,6 S. J. Williams,2 J. Wong,1 S. W. Yates,7 and E. F. Zganjar8 1Department of Physics, University of Guelph, Guelph, Ontario, Canada N1G 2W1 2TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia, Canada V6T 2A3 3Department of Physics, Queens University, Kingston, Ontario, Canada K7L 3N6 4Cyclotron Institute, Texas A&M University, College Station, Texas 77843, USA 5Department of Chemistry, Simon Fraser University, Burnaby, British Columbia, Canada V5A 1S6 6Department of Physics, University of Western Cape, P/B X 17 Bellville, 7535, South Africa 7Departments of Chemistry and Physics & Astronomy, University of Kentucky, Lexington, Kentucky 40506-0055, USA 8Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803-4001, USA (Received 15 November 2012; revised manuscript received 31 August 2013; published 1 October 2013)
منابع مشابه
Direct mass measurements on the superallowed emitter 74Rb and its daughter 74Kr: isospin-symmetry-breaking correction for standard-model tests.
The decay energy of the superallowed beta decay 74Rb(beta+)74Kr was determined by direct Penning trap mass measurements on both the mother and the daughter nuclide using the time-of-flight resonance technique and was found to be Q=10 416.8(4.5) keV. The exotic nuclide 74Rb, with a half-life of only 65 ms, is the shortest-lived nuclide on which a high-precision mass measurement in a Penning trap...
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