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From the same journal

Evidence for an isomeric 3/2(-) state in Co-53

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Published copy (DOI)

Author(s)

  • D. Rudolph
  • R. Hoischen
  • M. Hellstrom
  • S. Pietri
  • Zs. Podolyak
  • P. H. Regan
  • A. B. Garnsworthy
  • S. J. Steer
  • F. Becker
  • P. Bednarczyk
  • L. Caceres
  • P. Doornenbal
  • J. Gerl
  • M. Gorska
  • J. Grebosz
  • I. Kojouharov
  • N. Kurz
  • W. Prokopowicz
  • H. Schaffner
  • H. J. Wollersheim
  • L. -L. Andersson
  • L. Atanasova
  • D. L. Balabanski
  • A. Blazhev
  • C. Brandau
  • C. Fahlander
  • E. K. Johansson
  • A. Jungclaus

Department/unit(s)

Publication details

JournalEuropean physical journal A : Hadrons & Nuclei
DatePublished - May 2008
Issue number2
Volume36
Number of pages8
Pages (from-to)131-138
Original languageEnglish

Abstract

The fragmentation of a 550MeV/u primary beam of Ni-58 on a Be-9 target has been used to measure time-and energy-correlated gamma decays following the implantation of event-by-event discriminated secondary fragments into a Be-9 stopper plate. A new isomeric gamma decay with T-1/2 = 14(6 4) ns and E-gamma = 646.2(2) keV is observed and attributed to the decay of the yrast 3/2-state in Co-53(27)26. This short-lived isomeric state has been populated by means of nuclear reactions during the stopping process of the secondary fragments. The experimental findings are discussed in the framework of large-scale spherical shell model calculations in conjunction with isospin symmetry-breaking residual interactions for the A = 53, Tz = +/- 1/2 mirror nuclei Co-53 and Fe-53.

    Research areas

  • SHELL-MODEL, RISING CAMPAIGN, FRAGMENTATION, SPECTROSCOPY, (CO-53)M, NUCLEI, NI-56, GSI

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