A high-precision half-life measurement for the superallowed Fermi β+ emitter 22Mg was performed at the TRIUMF-ISAC facility using a 4π proportional gas counter. The result of T1/2=3.87400±0.00079 s is a factor of 3 more precise than the previously adopted world average and resolves a discrepancy between the two previously published 22Mg half-life measurements.
@article{arxiv.1711.00827,
title = {High-Precision Half-life Measurement for the Superallowed Fermi $\beta^+$ Emitter $^{22}$Mg},
author = {M. R. Dunlop and C. E. Svensson and G. C. Ball and J. R. Leslie and C. Andreoiu and N. Bernier and H. Bidaman and V. Bildstein and M. Bowry and C. Burbadge and R. Caballero-Folch and A. Diaz Varela and R. Dunlop and A. B. Garnsworthy and P. E. Garrett and G. Hackman and B. Jigmeddorj and K. G. Leach and A. D. MacLean and B. Olaizola and J. Measures and C. Natzke and Y. Saito and J. K. Smith and J. Turko and T. Zidar},
journal= {arXiv preprint arXiv:1711.00827},
year = {2017}
}