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

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...

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Detalles Bibliográficos
Autores: 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 Sánchez, Javier, Mougeot, M., Neidherr, D., Schweikhard, L., Schwenk, A., Simonis, J., Welker, A., Wienholtz, F., Zuber, K.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2020
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/172718
Acceso en línea:https://hdl.handle.net/2445/172718
Access Level:acceso abierto
Palabra clave:Espectroscòpia nuclear
Isòtops
Nuclear spectroscopy
Isotopes
Descripción
Sumario: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.

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