High-precision half-life determination of $^{14}$O via direct $β$ counting

Sharma, S, Grinyer, GF, Ball, GC, Leslie, JR, Svensson, CE, Ali, FA, Andreoiu, C, Bernier, N, Bhattacharjee, SS, Bildstein, V
et al (show 23 more authors) (2022) High-precision half-life determination of $^{14}$O via direct $β$ counting. [Preprint]

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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.

Item Type: Preprint
Additional Information: 8 pages, 6 figures, accepted for publication in the European Physical Journal A
Uncontrolled Keywords: nucl-ex, nucl-ex
Divisions: Faculty of Science and Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 22 Jul 2022 16:00
Last Modified: 18 Jan 2023 21:04
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3153885