Phys.Rev. C 92, 065502 (2015)

P.A.Voytas, E.A.George, G.W.Severin, L.Zhan, L.D.Knutson

Measurement of the branching ratio for the β decay of ¹⁴O

RADIOACTIVITY ¹⁴O(EC), (β⁺)[from N(p, n), E=8 MeV]; measured Eβ, Iβ positron spectra using a superconducting magnetic spectrometer and a thick Si(Li) detector at the University of Wisconsin Nuclear Physics Laboratory; deduced β branching ratio and partial half-life for superallowed 0+ to 0+ Fermi decay to the first excited state of ¹⁴N, logft, Ft. Discussed impact on the determination of the V_ud element of the CKM matrix. Comparison with previous experimental measurements, and with evaluation of other superallowed 0+ to 0+ β transitions.

doi: 10.1103/PhysRevC.92.065502