β and isomeric decay of V64

S. Suchyta, S. N. Liddick, C. J. Chiara, W. B. Walters, M. P. Carpenter, H. L. Crawford, G. F. Grinyer, G. Gürdal, A. Klose, E. A. McCutchan, J. Pereira, and S. Zhu
Phys. Rev. C 89, 067303 – Published 27 June 2014

Abstract

Background: Collectivity has been inferred in Cr64 based on measurements of the excitation energy of the first excited 2+ state and B(E2;21+01+) value. However, the energy of the 21+ state in Cr64 is not precisely known.

Purpose: The objective was to precisely determine the energy of the 21+01+ transition in Cr64 following the β decay of V64.

Method: V64 ions were produced by projectile fragmentation at the National Superconducting Cyclotron Laboratory and stopped in a double-sided Si strip detector. V64 isomeric and β-delayed γ rays were detected in an ancillary array of high-purity Ge detectors in order to determine the energies of excited states in V64 and Cr64.

Results: The first excited 2+ state in Cr64 was populated following the β decay of V64, and an energy of 430(2) keV was determined. Additionally, an isomeric state in V64 with an energy of 81.0(7) keV and a half-life less than 1 μs was discovered.

Conclusion: The excitation energy of the 21+ state in Cr64 has been precisely determined and an isomeric state is identified in V64 for the first time.

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  • Received 26 February 2014
  • Revised 21 May 2014

DOI:https://doi.org/10.1103/PhysRevC.89.067303

©2014 American Physical Society

Authors & Affiliations

S. Suchyta1,2, S. N. Liddick1,2, C. J. Chiara3,4, W. B. Walters3, M. P. Carpenter4, H. L. Crawford5,*, G. F. Grinyer6, G. Gürdal7,†, A. Klose1,2,‡, E. A. McCutchan4,§, J. Pereira1, and S. Zhu4

  • 1National Superconducting Cyclotron Laboratory (NSCL), Michigan State University, East Lansing, Michigan 48824, USA
  • 2Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, USA
  • 3Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, USA
  • 4Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
  • 5Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
  • 6Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DSM-CNRS/IN2P3, Boulevard Henri Becquerel, 14076 Caen, France
  • 7Nuclear Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, USA

  • *Present address: Department of Physics and Astronomy, Ohio University, Athens, Ohio 45701, USA.
  • Present address: Physics Department, Millsaps College, Jackson, Mississippi 39210, USA.
  • Present address: National Institute of Standards and Technology, Boulder, Colorado 80305, USA.
  • §Present address: National Nuclear Data Center, Brookhaven National Laboratory, Upton, New York 11973, USA.

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Vol. 89, Iss. 6 — June 2014

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