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

A. T. Laffoley; R. Dunlop; P. Finlay; G. F. Grinyer; C. Andreoiu; R. A. E. Austin; G. C. Ball; D. Bandyopadhyay; B. Blank; H. Bouzomita; S. Chagnon-Lessard; A. Chester; D. S. Cross; G. Demand; A. Diaz Varela; M. Djongolov; S. Ettenauer; A. B. Garnsworthy; P. E. Garrett; J. Giovinazzo; J. Glister; K. L. Green; G. Hackman; B. Hadinia; D. S. Jamieson; S. Ketelhut; K. G. Leach; J. R. Leslie; C. J. Pearson; A. A. Phillips; E. T. Rand; K. Starosta; C. S. Sumithrarachchi; C. E. Svensson; E. R. Tardiff; J. C. Thomas; I. S. Towner; S. Triambak; C. Unsworth; S. J. Williams; J. Wong; S. W. Yates; E. F. Zganjar

doi:10.1051/epjconf/20146605013

All issues

Volume 66 (2014)

EPJ Web of Conferences, 66 (2014) 05013

Abstract

Open Access

Issue		EPJ Web of Conferences Volume 66, 2014 INPC 2013 – International Nuclear Physics Conference


Article Number		05013
Number of page(s)		6
Section		Fundamental Symmetries and Interactions in Nuclei
DOI		https://doi.org/10.1051/epjconf/20146605013
Published online		20 March 2014

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

A. T. Laffoley¹^a, R. Dunlop¹, P. Finlay¹, G. F. Grinyer², C. Andreoiu³, R. A. E. Austin⁴, G. C. Ball⁵, D. Bandyopadhyay⁵, B. Blank⁶, H. Bouzomita², S. Chagnon-Lessard¹, A. Chester⁵, D. S. Cross³, G. Demand¹, A. Diaz Varela¹, M. Djongolov⁵, S. Ettenauer⁵^,7, A. B. Garnsworthy⁵, P. E. Garrett¹, J. Giovinazzo⁶, J. Glister⁵, K. L. Green¹, G. Hackman⁵, B. Hadinia¹, D. S. Jamieson¹, S. Ketelhut⁵, K. G. Leach¹, J. R. Leslie⁸, C. J. Pearson⁵, A. A. Phillips⁵, E. T. Rand¹, K. Starosta³, C. S. Sumithrarachchi¹, C. E. Svensson¹, E. R. Tardiff⁵, J. C. Thomas², I. S. Towner⁹, S. Triambak¹^,5^,10, C. Unsworth⁵, S. J. Williams⁵, J. Wong¹, S. W. Yates¹¹ and E. F. Zganjar¹²

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.

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