First Glimpse of the N=82 Shell Closure below Z=50 from Masses of Neutron-Rich 
Cadmium Isotopes and Isomers

Manea, V.; Karthein, J.; Atanasov, D.; Bender, M.; Blaum, K.; Cocolios, T. E.; Eliseev, S.; Herlert, A.; Holt, J. D.; Huang, W. J.; Litvinov, Yu. A.; Lunney, D.; Menéndez, J.; Mougeot, M.; Neidherr, D.; Schweikhard, L.; Schwenk, A.; Simonis, J.; Welker, A.; Wienholtz , F.; Zuber, K.

doi:10.1103/PhysRevLett.124.092502

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First Glimpse of the N=82 Shell Closure below Z=50 from Masses of Neutron-Rich Cadmium Isotopes and Isomers

MPS-Authors

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Manea, V.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Karthein, J.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Blaum, K.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Eliseev, S.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Schwenk, A.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Citation

Manea, V., Karthein, J., Atanasov, D., Bender, M., Blaum, K., Cocolios, T. E., et al. (2020). First Glimpse of the N=82 Shell Closure below Z=50 from Masses of Neutron-Rich Cadmium Isotopes and Isomers. Physical Review Letters, 124(9): 092502. doi:10.1103/PhysRevLett.124.092502.

Cite as: https://hdl.handle.net/21.11116/0000-0005-D8BA-6

Abstract

We probe the $N=82$ nuclear shell closure by mass measurements of
neutron-rich cadmium isotopes with the ISOLTRAP spectrometer at ISOLDE-CERN.
The new mass of $^{132}$Cd offers the first value of the $N=82$, two-neutron
shell gap below $Z=50$ and confirms the phenomenon of mutually enhanced
magicity at $^{132}$Sn. Using the recently implemented phase-imaging
ion-cyclotron-resonance method, the ordering of the low-lying isomers in
$^{129}$Cd and their energies are determined. The new experimental findings are
used to test large-scale shell-model, mean-field and beyond-mean-field
calculations, as well as the ab initio valence-space in-medium similarity
renormalization group.