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Multiple Shape Coexistence in Cd110,112

P. E. Garrett et al.
Phys. Rev. Lett. 123, 142502 – Published 3 October 2019
Physics logo See Synopsis: Nuclear Spectroscopy Reveals New Shapes of Excited Nuclei

Abstract

From detailed spectroscopy of Cd110 and Cd112 following the β+/electron-capture decay of In110,112 and the β decay of Ag112, very weak decay branches from nonyrast states are observed. The transition rates determined from the measured branching ratios and level lifetimes obtained with the Doppler-shift attenuation method following inelastic neutron scattering reveal collective enhancements that are suggestive of a series of rotational bands. In Cd110, a γ band built on the shape-coexisting intruder configuration is suggested. For Cd112, the 2+ and 3+ intruder γ-band members are suggested, the 03+ band is extended to spin 4+, and the 04+ band is identified. The results are interpreted using beyond-mean-field calculations employing the symmetry conserving configuration mixing method with the Gogny D1S energy density functional and with the suggestion that the Cd isotopes exhibit multiple shape coexistence.

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  • Received 31 August 2018
  • Revised 29 June 2019

DOI:https://doi.org/10.1103/PhysRevLett.123.142502

© 2019 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

Synopsis

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Nuclear Spectroscopy Reveals New Shapes of Excited Nuclei

Published 3 October 2019

Cadmium nuclei take on multiple shapes at low excitation energies, a discovery that overturns a long-accepted tenet of nuclear structure.

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Issue

Vol. 123, Iss. 14 — 4 October 2019

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