In-beam γ-ray spectroscopy of the odd-odd nucleus <sup>186</sup>Re

ORAL

Abstract

Excited states in 186Re were investigated in two separate experiments using 186W(d,2n) reactions at beam energies of 12.5 MeV and 14.5 MeV. Two- and three-fold γ-ray coincidence data were collected using the CAESAR and CAGRA spectrometers, respectively, each composed of Compton-suppressed HPGe detectors. Analysis of the data revealed rotational bands built on several two quasiparticle intrinsic states, including a long-lived Kπ=(8+) isomer. The excitation energies of the observed intrinsic states were compared with results from multi-quasiparticle blocking calculations, based on the Lipkin-Nogami pairing approach, that included contributions from the residual proton-neutron interactions.

*On behalf of CAGRA collaboration: ANL, Air Force Institute of Technology, RCNP, ANU, NSCL, U.S. Army Research Laboratory, Osaka University, and Beihang University. This work was supported in part by the U.S Department of Energy, Office of Science, Office of Nuclear Physics, under Contract No. DE-AC-06CH11357 (ANL), the Australian Research Council under projects DP0343027, DP0345844 and FT100100991, and the U.S. Army Research Laboratory under Cooperative Agreement W911NF-12-2-0019. Additional funding was provided by the Domestic Nuclear Detection Office of the Department of Homeland Security.

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Presenters

  • Filip G Kondev

    • Argonne Natl Lab
    • Argonne National Laboratory

Authors

  • Filip G Kondev

    • Argonne Natl Lab
    • Argonne National Laboratory