Nuclear Structure in $^7$$^8$Ge

ORAL

Abstract

Owing to the importance of the structure of $^{76}$Ge in interpreting double $\beta$ decay studies, the structures of adjacent nuclei have been of considerable interest. Recently reported features for the structures of $^{72,74,76}$Ge indicate both shape coexistence and triaxiality. New data for the excited states of $^{78}$Ge will be reported arising from Gammasphere studies of multinucleon transfer reactions between a $^{76}$Ge beam and thick heavy targets at the ATLAS facility at Argonne National Laboratory. The previously known yrast band is extended to higher spins, candidate levels for a triaxial sequence have been observed, and the associated staggering determined. The staggering in $^{78}$Ge found in this work is not in agreement with theoretical work\footnote{J.J Sun \it{et al.}, Phys. Lett B \textbf{734}, 308 (2014).}. Candidates for negative-parity states and seniority-four states will be discussed.

*This material is based upon work supported by the U.S. DOE under DE-AC02-06CH11357 and DE-FG02-94ER40834. Resources of ANL’s ATLAS setup, a DOE Office of Science user facility, were used.

Authors

  • Anne M. Forney

    • UMD College Park
  • W.B. Walters

    • UMD College Park
  • J. Sethi

    • UMD College Park
  • C.J. Chiara

    • UMD College Park
  • J. Harker

    • UMD College Park
  • R.V.F. Janssens

    • ANL
  • S. Zhu

    • ANL
  • M. Carpenter

    • ANL
  • M. Alcorta

    • ANL
  • G. G\"{u}rdal

    • ANL
  • C.R. Hoffman

    • ANL
  • B.P. Kay

    • ANL
  • F.G. Kondev

    • ANL
  • T. Lauristen

    • ANL
  • C.J. Lister

    • ANL
  • E.A. McCutchan

    • ANL
  • A.M. Rogers$^4$

    • ANL
  • D. Seweryniak

    • ANL