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

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 abinitio valence-space in-medium similarity renormalization group.

published proceedings

  • Phys Rev Lett

author list (cited authors)

  • Manea, V., Karthein, J., Atanasov, D., Bender, M., Blaum, K., Cocolios, T. E., ... Zuber, K.

complete list of authors

  • Manea, V||Karthein, J||Atanasov, D||Bender, M||Blaum, K||Cocolios, TE||Eliseev, S||Herlert, A||Holt, JD||Huang, WJ||Litvinov, Yu A||Lunney, D||Menéndez, J||Mougeot, M||Neidherr, D||Schweikhard, L||Schwenk, A||Simonis, J||Welker, A||Wienholtz, F||Zuber, K

publication date

  • March 2020