Structure of F23 via β decay of O23

C. S. Sumithrarachchi, D. J. Morrissey, B. A. Brown, A. D. Davies, D. A. Davies, M. Fancina, E. Kwan, P. F. Mantica, M. Portillo, Y. Shimbara, J. Stoker, and R. R. Weerasiri
Phys. Rev. C 75, 024305 – Published 15 February 2007

Abstract

The nuclear states in F23 have been investigated following the β decay of O23. The measurement of O23 was carried out at the National Superconducting Cyclotron Laboratory using fragments from the reaction of a Ca48 beam in a Be target. The half-life and total neutron emission probability were determined to be 97(8) ms and 7(2)%, respectively, for O23 β decay. Ten γ-ray decays in F23 and a single γ-ray in F22 were observed to establish the β decay scheme for O23. Shell model calculations are in reasonable agreement with the measured β branching and B(GT) values for the lowest energy state. The excitation energies of the first 1/2+ and 3/2+ states have been determined to be 2243(8) and 4066(16) keV, respectively, indicating a widening of the 5/2+1/2+ state gap in F23. The decay scheme of the largest contaminant Ne26 in the experiment was established.

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  • Received 28 September 2006

DOI:https://doi.org/10.1103/PhysRevC.75.024305

©2007 American Physical Society

Authors & Affiliations

C. S. Sumithrarachchi1,2,*, D. J. Morrissey1,2, B. A. Brown1,3, A. D. Davies1,3, D. A. Davies1,2, M. Fancina1, E. Kwan1,3, P. F. Mantica1,2, M. Portillo1, Y. Shimbara1, J. Stoker1,2, and R. R. Weerasiri1,2

  • 1National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
  • 2Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, USA
  • 3Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA

  • *Electronic address: chandana@nscl.msu.edu

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Vol. 75, Iss. 2 — February 2007

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