EPJ Web of Conferences 66, 05013 (2014)
https://doi.org/10.1051/epjconf/20146605013

High-precision half-life and branching-ratio measurements for superallowed Fermi β⁺ emitters at TRIUMF – ISAC

¹ Department of Physics, University of Guelph, Guelph, Ontario N1G 2W1, Canada
² GANIL, CEA/DSM-CNRS/IN2P3, Bvd Henri Becquerel, 14076 Caen, France
³ Department of Chemistry, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada
⁴ Department of Astronomy & Physics, Saint Mary’s University, Halifax, Nova Scotia B3H 3C3, Canada
⁵ TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
⁶ Centre d’Etudes Nucléaires de Bordeaux Gradignan-Université Bordeaux 1-UMR 5797 CNRS/IN2P3, Chemin du Solarium, BP 120, F-33175 Gradignan Cedex, France
⁷ Department of Physics & Astronomy, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
⁸ Department of Physics, Queen’s University, Kingston, Ontario K7L 3N6, Canada
⁹ Cyclotron Institute, Texas A&M University, College Station, Texas 77843, USA
¹⁰ Department of Physics, University of Delhi, Delhi 110 007, India
¹¹ University of Kentucky, Lexington, Kentucky 40506-0055, USA
¹² Department of Physics&Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803-4001, USA

^a e-mail: alaffole@uoguelph.ca

Published online: 20 March 2014

Abstract

A program of high-precision half-life and branching-ratio measurements for superallowed Fermi β emitters is being carried out at TRIUMF’s Isotope Separator and Accelerator (ISAC) radioactive ion beam facility. Recent half-life measurements for the superallowed decays of ¹⁴O, ¹⁸Ne, and ²⁶Al^m, as well as branching-ratio measurements for ²⁶Al^m and ⁷⁴Rb are reported. These results provide demanding tests of the Standard Model and the theoretical isospin symmetry breaking (ISB) corrections in superallowed Fermi β decays.