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.
- Eliseev, S.
- Herlert, A.
- Holt, J.
- Huang, W.
- Litvinov, Y.
- Lunney, D.
- Menéndez, J.
- Mougeot, M.
- Neidherr, D.
- Schweikhard, L.
- Schwenk, A.
- Simonis, J.
- Welker, A.
- Wienholtz , F.
- Zuber, K.
Publication date
March 2020
DOI Publisher
American Physical Society (APS) Language
EnglishAbstract
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
Add to ORKG