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Article
Report number	arXiv:2204.06668
Title	High-precision half-life determination of $^{14}$O via direct $\beta $ counting
Related title	High-precision half-life determination of $^{14}$O via direct $\beta$ counting
Author(s)	Sharma, S. (Regina U.) ; Grinyer, G.F. (Regina U.) ; Ball, G.C. (TRIUMF) ; Leslie, J.R. (Queen's U., Kingston) ; Svensson, C.E. (Guelph U.) ; Ali, F.A. (Guelph U. ; Sulaimaniya U.) ; Andreoiu, C. (Simon Fraser U., Dept. Chem.) ; Bernier, N. (TRIUMF ; British Columbia U. ; Western Cape U. ; Zululand U.) ; Bhattacharjee, S.S. (TRIUMF) ; Bildstein, V. (Guelph U.) ; Burbadge, C. (Guelph U.) ; Caballero-Folch, R. (TRIUMF) ; Coleman, R. (Guelph U.) ; Varela Diaz, A. (Guelph U.) ; Dunlop, M.R. (Guelph U.) ; Dunlop, R. (Guelph U.) ; Garnsworthy, A.B. (TRIUMF) ; Fuakye, E. Gyabeng (Regina U.) ; Huber, G.M. (Regina U.) ; Jigmeddorj, B. (Guelph U.) ; Kapoor, K. (Regina U.) ; Laffoley, A.T. (Guelph U.) ; Leach, K.G. (Colorado School of Mines) ; Long, J. (Notre Dame U.) ; MacLean, A.D. (Guelph U.) ; Natzke, C.R. (TRIUMF ; Colorado School of Mines) ; Olaizola, B. (TRIUMF ; CERN) ; Radich, A.J. (Guelph U.) ; Saei, N. (Regina U.) ; Smallcombe, J.T. (TRIUMF ; Liverpool U.) ; Talebitaher, A. (Regina U.) ; Whitmore, K. (Simon Fraser U., Dept. Chem.) ; Zidar, T. (Guelph U.)
Publication	2022-05-03
Imprint	2022-04-13
Number of pages	8
Note	8 pages, 6 figures, accepted for publication in the European Physical Journal A
In:	Eur. Phys. J. A 58 (2022) 83
DOI	10.1140/epja/s10050-022-00730-w
Subject category	nucl-ex ; Nuclear Physics - Experiment
Accelerator/Facility, Experiment	TRIUMF ISAC
Abstract	The half-life of the superallowed Fermi $\beta^+$ emitter $^{14}$O was determined to high precision via a direct $\beta$ counting experiment performed at the Isotope Separator and Accelerator (ISAC) facility at TRIUMF. The result, $T_{1/2}$($^{14}$O) = 70619.2(76) ms, is consistent with, but is more precise than, the world average obtained from 11 previous measurements. Combining the $^{14}$O half-life deduced in the present work with the previous most precise measurements of this quantity leads to a reduction in the overall uncertainty, by nearly a factor of 2. The new world average is $T_{1/2}$($^{14}$O) = 70619.6(63) ms with a reduced $\chi^2$ value of 0.87 obtained from 8 degrees of freedom.
Copyright/License	publication: © 2022-2024 The Author(s) (License: CC-BY-4.0) preprint: (License: CC-BY-4.0)

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