High-Precision Half-life Measurements for the Superallowed $\beta$+ Emitter $^{14}$O
- Laffoley, A.T.
- Svensson, C.E.
- Andreoiu, C.
- Austin, R.A.E.
- Ball, G.C.
- Blank, Bertram
- Bouzomita, H.
- S. Cross, D.
- Diaz Varela, A.
- Dunlop, R.
- Finlay, P.
- Garnsworthy, A.B.
- Garrett, P.
- Giovinazzo, J.
- Grinyer, G.F.
- Hackman, G.
- Hadinia, B.
- Jamieson, D.S.
- Ketelhut, S.
- Leach, K.G.
- Leslie, J.R.
- Tardiff, E.R.
- Thomas, J.C.
- Unsworth, C.
DOIAbstract
International audienceThe half-life of 14O, a superallowed Fermi emitter, has been determined via simultaneous and counting experiments at TRIUMF's Isotope Separator and Accelerator facility. Following the implantation of 14O samples at the center of the 8 spectrometer, a counting measurement was performed by detecting the 2313 keV rays emitted from the first excited state of the daughter 14N using 20 high-purity germanium (HPGe) detectors. A simultaneous counting experiment was performed using a fast plastic scintillator positioned directly behind the implantation site. The results, T1=2( ) = 70:632 0:094 s and T1=2( ) = 70:610 0:030 s, are consistent with one another and, together with eight previous measurements, establish a new average ...
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