Single-particle and collective excitations in <sup>66</sup>Zn

POSTER

Abstract

Medium and high-spin states in 66Zn were investigated by means of the complex multinucleon transfer reaction 26Mg(48Ca, α4nγ) at beam energies of 275, 290 and 320 MeV. The experiment was performed in inverse kinematics at the ATLAS facility at Argonne National Laboratory using the Gammasphere spectrometer and the fragment mass analyzer (FMA). A high-spin, quasi-rotational-like band consisting of stretched-E2 transitions was observed in coincidence with the known low-spin structure of mostly single-particle character. However, due to fragmentation, the two structures could thus far not be linked. A general discussion, complemented by theoretical calculations, of the observed structures will be presented within the context of shell structure evolution and collectivity in the A ∼ 60 mass region [1-3].

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

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

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

*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).

Presenters

  • Matteo R Fulghieri

    • University of North Carolina at Chapel Hill

Authors

  • Matteo R Fulghieri

    • 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

  • Shaofei Zhu

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