Beta Decay of O19 to the ½ State of F19

John C. Cooper and Bernd Crasemann
Phys. Rev. C 2, 451 – Published 1 August 1970
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Abstract

The intensity of the unique first-forbidden 4.708-MeV outer branch of the O19 β spectrum, leading to the 110-keV ½ hole state in F19, has been determined as (4.83.3+1.2)×104 per O19 decay. Consequently, the comparative half-life is f1t=(1.50.3+3.1)×1010 sec, and the strength of the transition is G12=0.130.09+0.03 F2. This result was found from the analysis of βγ coincidence spectra obtained from reactor-irradiated water samples that had been enriched in O18. An upper limit of 6 × 104 is set on the branching of the 197-keV level decay in F19 through the 110-keV state. The results can be used to infer the extent of wave-function admixture (core excitation) in the ground state of O19.

  • Received 2 March 1970

DOI:https://doi.org/10.1103/PhysRevC.2.451

©1970 American Physical Society

Authors & Affiliations

John C. Cooper and Bernd Crasemann

  • Department of Physics, University of Oregon, Eugene, Oregon 97403

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Issue

Vol. 2, Iss. 2 — August 1970

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