High-spin spectroscopy of <sup>64</sup>Cu

ORAL

Abstract



Medium and high-spin structures in 64Cu were investigated by means of the 26Mg(48Ca, αp5nγ) multinucleon transfer reaction. The experiment was performed at the ATLAS accelerator facility at Argonne National Laboratory using the Gammasphere multidetector array and the fragment mass analyzer (FMA). Two high-spin, quasi-rotational bands consisting of stretched-E2 transitions were observed in coincidence with the known low-spin structure. These bands share remarkable similarities with super-deformed bands observed in the region. In addition, a regular dipole sequence with E2 crossover transitions was observed as well. A general discussion of the observed structures, complemented by theoretical calculations, will be presented in the context of shell structure evolution and collectivity in the A ~ 60 region.

*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

  • Antonella Saracino

    • University of North Carolina at Chapel Hill

Authors

  • Antonella Saracino

    • University of North Carolina at Chapel Hill

  • Akaa D Ayangeakaa

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

  • Nirupama Sensharma

    • University of North Carolina at Chapel Hill

  • Robert V.F. V Janssens

    • University of North Carolina at Chapel Hill
    • University of North Carolina at Chapel Hill, Triangle Universities Nuclear Laboratory

  • Q. B Chen

    • East China Normal University, Shanghai

  • M. P Carpenter

    • Argonne National Laboratory
    • Physics Division, Argonne National Laboratory, Lemont, Illinois 60439, USA

  • Partha Chowdhury

    • University of Massachusetts Lowell

  • Alexandra Gade

    • Michigan State University
    • NSCL Michigan State University
    • FRIB

  • Calem R Hoffman

    • Argonne National Laboratory

  • Filip G Kondev

    • Argonne National Laboratory
    • Physics Division, Argonne National Laboratory, Lemont, Illinois 60439, USA

  • T. Lauritsen

    • Argonne National Laboratory
    • Physics Division, Argonne National Laboratory, Lemont, Illinois 60439, USA

  • Elizabeth McCutchan

    • Brookhaven National Laboratory

  • Andrew Rogers

    • University of Massachusetts Lowell
    • University of Massachusetts-Lowell

  • D. Seweryniak

    • Argonne National Laboratory
    • Physics Division, Argonne National Laboratory, Lemont, Illinois 60439, USA