Structure of <sup>62</sup>Co

ORAL

Abstract

An extensive study of the level structure of 62Co has been performed following a complex multinucleon transfer reaction 26Mg( 48Ca, 2α3npγ) 62Co at beam energies of 275, 290 and 320 MeV. The combination of the Gammasphere array, the Fragment Mass Analyzer (FMA) and a focal-plane ionization chamber was used to identify and delineate excited levels in 62Co. As a result, the 62Co level scheme was considerably extended. Based on angular distribution measurements and DCO ratios, various level sequences built upon states of single-particle character were observed. An interpretation of these structures in the framework of the shell model will be presented and the evolution of collectivity in the A ∼ 60 region will be highlighted against the backdrop of the recently observed signatures of collectivity in 62,63Ni [1, 2] and 61Co [3].

[1] M. Albers, et. al. PRC 94, 034301 (2016)

[2] M. Albers, et. al. PRC 88, 054314 (2013)

[3] A. D. Ayangeakaa, et. al. PRC 91, 044327 (2015)

*This work was supported in part by Grants No. DEFG02-97ER41041 (UNC), No. DE-FG02-97ER41033 (TUNL) and by the U.S. DOE, Office of Nuclear Physics, under Contract No. DE-AC02-06CH11357 and Grants Nos. DE-FG02-94ER40834 and DE-FG02-08ER41556, by the NSF under Contract No. PHY-0606007, and by the UK Science and Technology Facilities Council (STFC).

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Presenters

  • Nirupama Sensharma

    • University of North Carolina at Chapel Hill

Authors

  • Nirupama Sensharma

    • University of North Carolina at Chapel Hill

  • Akaa D Ayangeakaa

    • University of North Carolina at Chapel Hill
    • University of North Carolina at Chapel H

  • Robert V Janssens

    • University of North Carolina at Chapel Hill
    • Department of Physics & Astronomy, University of North Carolina at Chapel Hill, Chapel Hill, NC-27599-3255, USA and Triangle Universities Nuclear Laboratory, Duke University,
    • University of North Carolina Chapel Hill

  • Matteo Fulghieri

    • University of North Carolina at Chapel Hill

  • Shaofei Zhu

    • Brookhaven National Laboratory
    • Brookhaven National Lab
    • Argonne National Laboratory

  • Michael P Carpenter

    • Argonne National Laboratory
    • ANL

  • Alexandra Gade

    • Michigan State University

  • Torben Lauritsen

    • Argonne National Laboratory
    • ANL

  • D. Seweryniak

    • Argonne National Laboratory
    • ANL

  • Christopher J Chiara

    • US Army Research Lab Adelphi

  • Partha Chowdhury

    • University of Massachusetts Lowell

  • Calem R Hoffman

    • Argonne National Laboratory

  • Filip G Kondev

    • Argonne National Laboratory
    • Physics Division, Argonne National Laboratory, Lemont, IL-60439

  • C.J. J Lister

    • University of Massachusetts Lowell

  • Elizabeth McCutchan

    • Brookhaven National Laboratory