In-beam γ-ray spectroscopy studies of medium-spin states in the odd-odd nucleus Re186

D. A. Matters et al.
Phys. Rev. C 96, 014318 – Published 27 July 2017

Abstract

Excited states in Re186 with spins up to J=12 were investigated in two separate experiments using W186(d,2n) reactions at beam energies of 12.5 and 14.5 MeV. Two- and threefold γ-ray coincidence data were collected using the CAESAR and CAGRA spectrometers, respectively, each composed of Compton-suppressed high-purity germanium detectors. Analysis of the data revealed rotational bands built on several two-quasiparticle intrinsic states, including a long-lived Kπ=(8+) isomer. Configuration assignments were supported by an analysis of in-band properties, such as gKgR values. 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.

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  • Received 14 April 2017
  • Revised 7 June 2017

DOI:https://doi.org/10.1103/PhysRevC.96.014318

©2017 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

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Vol. 96, Iss. 1 — July 2017

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