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Title: Half-life of 14O

Journal Article · · Physical Review C

We have measured the half-life of 14O, a superallowed (0+\rightarrow 0+) \beta decay isotope. The 14O was produced by the12C(3He,n)14O reaction using a carbon aerogel target. A low-energy ionbeam of 14O was mass separated and implanted in a thin beryllium foil.The beta particles were counted with plastic scintillator detectors. Wefind \tau 1/2 = 70.696 +- 0.037\sigma. This result is 2.0\sigma higherthan an average value from six earlier experiments, but agrees moreclosely with the most recent previous measurment.

Research Organization:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Director. Office of Science. NuclearPhysics
DOE Contract Number:
DE-AC02-05CH11231
OSTI ID:
919823
Report Number(s):
LBNL-59397; PRVCAN; R&D Project: NWEAK; BnR: KB0401024; TRN: US0806504
Journal Information:
Physical Review C, Vol. 74; Related Information: Journal Publication Date: 2006; ISSN 0556-2813
Country of Publication:
United States
Language:
English

References (12)

The half-life of 14O and the ft value of the superallowed Fermi decay journal November 1973
High Precision Measurement of the Superallowed 0 + 0 + β Decay of M g 22 journal August 2003
A 2.45 GHz ECR ion source for production of medium charge states ions journal February 1998
New analysis of O 14 β decay: Branching ratios and conserved vector current consistency journal November 2005
High-precision measurement of the 14O half-life using a mass-separated radioactive beam journal October 2001
Half-life of the superallowed positron emitter O14 journal August 2004
Q Value of the Superallowed Decay of V 46 and Its Influence on V u d and the Unitarity of the Cabibbo-Kobayashi-Maskawa Matrix journal August 2005
Superallowed 0 + 0 + nuclear β decays: A critical survey with tests of the conserved vector current hypothesis and the standard model journal May 2005
Calculated corrections to superallowed Fermi β decay: New evaluation of the nuclear-structure-dependent terms journal September 2002
Energy of the 14 O superallowed positron decay journal March 2003
Clarification of the use of CHI-square and likelihood functions in fits to histograms journal April 1984
The excitation function for the reaction C12(He3,n0)O14 between threshold and 11.45 MeV journal December 1964

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