Abstract
From detailed spectroscopy of and following the /electron-capture decay of and the decay of , 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 , a band built on the shape-coexisting intruder configuration is suggested. For , the and intruder -band members are suggested, the band is extended to spin , and the 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.
- 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)
Synopsis
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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