High-precision half-life determination for Na 21 using a 4π gas-proportional counter

P. Finlay; A. T. Laffoley; G. C. Ball; P. C. Bender; M. R. Dunlop; R. Dunlop; G. Hackman; J. R. Leslie; A. D. Maclean; D. Miller; M. Moukaddam; B. Olaizola; N. Severijns; J. K. Smith; D. Southall; C. E. Svensson

doi:10.1103/PhysRevC.96.025501

High-precision half-life determination for Na 21 using a 4π gas-proportional counter

P. Finlay, A. T. Laffoley, G. C. Ball, P. C. Bender, M. R. Dunlop, R. Dunlop, G. Hackman, J. R. Leslie, A. D. Maclean, D. Miller, M. Moukaddam, B. Olaizola, N. Severijns, J. K. Smith, D. Southall, C. E. Svensson

Physics and Astronomy

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4 Scopus citations

Abstract

A high-precision half-life measurement for the superallowed β+ transition between the isospin T=1/2 mirror nuclei Na21 and Ne21 has been performed at the TRIUMF-ISAC radioactive ion beam facility yielding T1/2=22.4506(33) s, a result that is a factor of 4 more precise than the previous world-average half-life for Na21 and represents the single most precisely determined half-life for a transition between mirror nuclei to date. The contribution to the uncertainty in the Na21 Ftmirror value due to the half-life is now reduced to the level of the nuclear-structure-dependent theoretical corrections, leaving the branching ratio as the dominant experimental uncertainty.

Original language	English (US)
Article number	025501
Journal	Physical Review C
Volume	96
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevC.96.025501
State	Published - Aug 9 2017

Funding

The authors would like to thank the GPS Collaboration and the TRIUMF-ISAC operators and target group. This work was supported by FWO-Vlaanderen (Belgium) and the Natural Sciences and Engineering Research Council of Canada (NSERC). C.E.S. acknowledges support from the Canada Research Chairs program. TRIUMF receives federal funding via a contribution agreement through the National Research Council of Canada (NRC).

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1103/PhysRevC.96.025501

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Finlay, P., Laffoley, A. T., Ball, G. C., Bender, P. C., Dunlop, M. R., Dunlop, R., Hackman, G., Leslie, J. R., Maclean, A. D., Miller, D., Moukaddam, M., Olaizola, B., Severijns, N., Smith, J. K., Southall, D., & Svensson, C. E. (2017). High-precision half-life determination for Na 21 using a 4π gas-proportional counter. Physical Review C, 96(2), Article 025501. https://doi.org/10.1103/PhysRevC.96.025501

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title = "High-precision half-life determination for Na 21 using a 4π gas-proportional counter",

abstract = "A high-precision half-life measurement for the superallowed β+ transition between the isospin T=1/2 mirror nuclei Na21 and Ne21 has been performed at the TRIUMF-ISAC radioactive ion beam facility yielding T1/2=22.4506(33) s, a result that is a factor of 4 more precise than the previous world-average half-life for Na21 and represents the single most precisely determined half-life for a transition between mirror nuclei to date. The contribution to the uncertainty in the Na21 Ftmirror value due to the half-life is now reduced to the level of the nuclear-structure-dependent theoretical corrections, leaving the branching ratio as the dominant experimental uncertainty.",

author = "P. Finlay and Laffoley, {A. T.} and Ball, {G. C.} and Bender, {P. C.} and Dunlop, {M. R.} and R. Dunlop and G. Hackman and Leslie, {J. R.} and Maclean, {A. D.} and D. Miller and M. Moukaddam and B. Olaizola and N. Severijns and Smith, {J. K.} and D. Southall and Svensson, {C. E.}",

note = "Funding Information: The authors would like to thank the GPS Collaboration and the TRIUMF-ISAC operators and target group. This work was supported by FWO-Vlaanderen (Belgium) and the Natural Sciences and Engineering Research Council of Canada (NSERC). C.E.S. acknowledges support from the Canada Research Chairs program. TRIUMF receives federal funding via a contribution agreement through the National Research Council of Canada (NRC). Publisher Copyright: {\textcopyright} 2017 American Physical Society.",

year = "2017",

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doi = "10.1103/PhysRevC.96.025501",

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Finlay, P, Laffoley, AT, Ball, GC, Bender, PC, Dunlop, MR, Dunlop, R, Hackman, G, Leslie, JR, Maclean, AD, Miller, D, Moukaddam, M, Olaizola, B, Severijns, N, Smith, JK, Southall, D & Svensson, CE 2017, 'High-precision half-life determination for Na 21 using a 4π gas-proportional counter', Physical Review C, vol. 96, no. 2, 025501. https://doi.org/10.1103/PhysRevC.96.025501

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T1 - High-precision half-life determination for Na 21 using a 4π gas-proportional counter

AU - Finlay, P.

AU - Laffoley, A. T.

AU - Ball, G. C.

AU - Bender, P. C.

AU - Dunlop, M. R.

AU - Dunlop, R.

AU - Hackman, G.

AU - Leslie, J. R.

AU - Maclean, A. D.

AU - Miller, D.

AU - Moukaddam, M.

AU - Olaizola, B.

AU - Severijns, N.

AU - Smith, J. K.

AU - Southall, D.

AU - Svensson, C. E.

N1 - Funding Information: The authors would like to thank the GPS Collaboration and the TRIUMF-ISAC operators and target group. This work was supported by FWO-Vlaanderen (Belgium) and the Natural Sciences and Engineering Research Council of Canada (NSERC). C.E.S. acknowledges support from the Canada Research Chairs program. TRIUMF receives federal funding via a contribution agreement through the National Research Council of Canada (NRC). Publisher Copyright: © 2017 American Physical Society.

PY - 2017/8/9

Y1 - 2017/8/9

N2 - A high-precision half-life measurement for the superallowed β+ transition between the isospin T=1/2 mirror nuclei Na21 and Ne21 has been performed at the TRIUMF-ISAC radioactive ion beam facility yielding T1/2=22.4506(33) s, a result that is a factor of 4 more precise than the previous world-average half-life for Na21 and represents the single most precisely determined half-life for a transition between mirror nuclei to date. The contribution to the uncertainty in the Na21 Ftmirror value due to the half-life is now reduced to the level of the nuclear-structure-dependent theoretical corrections, leaving the branching ratio as the dominant experimental uncertainty.

AB - A high-precision half-life measurement for the superallowed β+ transition between the isospin T=1/2 mirror nuclei Na21 and Ne21 has been performed at the TRIUMF-ISAC radioactive ion beam facility yielding T1/2=22.4506(33) s, a result that is a factor of 4 more precise than the previous world-average half-life for Na21 and represents the single most precisely determined half-life for a transition between mirror nuclei to date. The contribution to the uncertainty in the Na21 Ftmirror value due to the half-life is now reduced to the level of the nuclear-structure-dependent theoretical corrections, leaving the branching ratio as the dominant experimental uncertainty.

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High-precision half-life determination for Na 21 using a 4π gas-proportional counter

Abstract

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ASJC Scopus subject areas

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