The half-life of the superallowed Fermi β+ emitter 14O was determined to high precision via a direct β counting experiment performed at the Isotope Separator and Accelerator (ISAC) facility at TRIUMF. The result, T1/2(14O) = 70619.2(76) ms, is consistent with, but is more precise than, the world average obtained from 11 previous measurements. Combining the 14O 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 T1/2(14O) = 70619.6(63) ms with a reduced χ2 value of 0.87 obtained from 8 degrees of freedom.
@article{arxiv.2204.06668,
title = {High-precision half-life determination of $^{14}$O via direct $\beta$ counting},
author = {S. Sharma and G. F. Grinyer and G. C. Ball and J. R. Leslie and C. E. Svensson and F. A. Ali and C. Andreoiu and N. Bernier and S. S. Bhattacharjee and V. Bildstein and C. Burbadge and R. Caballero-Folch and R. Coleman and A. Diaz Varela and M. R. Dunlop and R. Dunlop and A. B. Garnsworthy and E. Gyabeng Fuakye and G. M. Huber and B. Jigmeddorj and K. Kapoor and A. T. Laffoley and K. G. Leach and J. Long and A. D. MacLean and C. R. Natzke and B. Olaizola and A. J. Radich and N. Saei and J. T. Smallcombe and A. Talebitaher and K. Whitmore and T. Zidar},
journal= {arXiv preprint arXiv:2204.06668},
year = {2022}
}
Comments
8 pages, 6 figures, accepted for publication in the European Physical Journal A