Half-Life of ${}^{14}$O

Abstract

We have measured the half-life of ${}^{14}$O, a superallowed $(0^{+}\to 0^{+})$ $\beta$ decay isotope. The ${}^{14}$O was produced by the ${}^{12}$C(${}^3$He,n)${}^{14}$O reaction using a carbon aerogel target. A low-energy ion beam of ${}^{14}$O was mass separated and implanted in a thin beryllium foil. The beta particles were counted with plastic scintillator detectors. We find $t_{1/2}=70.696\pm 0.052$ s. This result is $1.5\sigma$ higher than an average value from six earlier experiments, but agrees more closely with the most recent previous measurement.

10 pages, 5 figures

References in corpus (4)

• Superallowed nuclear beta decays: A critical survey with tests of CVC and the standard model
• Calculated corrections to superallowed Fermi beta decay: New evaluation of the nuclear-structure-dependent terms
• High Precision Measurement of the Superallowed 0^+ to 0^+ Beta Decay of ^{22}Mg
• A new analysis of 14O beta decay: branching ratios and CVC consistency

Cited by in corpus (5)

• Superallowed 0+ to 0+ nuclear beta decays: A new survey with precision tests of the conserved vector current hypothesis and the standard model
• Superallowed 0+ --> 0+ nuclear beta decays: 2014 critical survey, with precise results for Vud and CKM unitarity
• An improved calculation of the isospin-symmetry-breaking corrections to superallowed Fermi beta decay
• Ab-initio electroweak corrections to superallowed $\beta$ decays and their impact on $V_{ud}$
• High-precision half-life determination of ${}^{14}$O via direct $\beta$ counting