Journal article

High-spin spectroscopy and shell-model interpretation of the N < 126 radium isotopes 212Ra and 213Ra


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Author list: T. Palazzo, G. J. Lane, A. E. Stuchbery, A. J. Mitchell, A Akber, M.S. M. Gerathy, S. S. Hota, T. Kibédi, B. Q. Lee, N Palalani, M.W. Reed

Publication year: 2018

ISSN: 2469-9985

URL: https://journals.aps.org/prc/abstract/10.1103/PhysRevC.97.014323



The level structures of 212Ra and 213Ra have been established via time-correlated γ-ray spectroscopy following the 204Pb(12C,4n)212Ra and 204Pb(13C,4n)213Ra reactions. In 212Ra, levels up to ∼6.2MeV were identified and firm spin-parity assignments were achieved to a Jπ=19+ isomer with a mean life of 31(3) ns. For 213Ra the corresponding values were ∼4.5MeV in excitation energy and Jπ=33/2+. Two isomeric states with Jπ=23/2+, τ=27(3) ns and Jπ=33/2+, τ=50(3) ns were discovered in 213Ra. The experimental data were compared with semiempirical shell-model calculations, which allowed dominant configurations to be assigned to most of the observed levels.


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Last updated on 2022-29-11 at 11:35