Precision mass measurements of Cd125127 isotopes and isomers approaching the N=82 closed shell

D. Lascar et al.
Phys. Rev. C 96, 044323 – Published 23 October 2017

Abstract

We present the results of precision mass measurements of neutron-rich cadmium isotopes. These nuclei approach the N=82 closed neutron shell and are important to nuclear structure as they lie near doubly magic Sn132 on the chart of nuclides. Of particular note is the clear identification of the ground-state mass in Cd127 along with the isomeric state. We show that the ground state identified in a previous mass measurement which dominates the mass value in the Atomic Mass Evaluation is an isomeric state. In addition to Cd127/m, we present other cadmium masses measured (Cd125/m and Cd126) in a recent TITAN experiment at TRIUMF. Finally, we compare our measurements to new ab initio shell-model calculations and comment on the state of the field in the N=82 region.

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  • Received 12 May 2017
  • Revised 30 June 2017

DOI:https://doi.org/10.1103/PhysRevC.96.044323

©2017 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

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Vol. 96, Iss. 4 — October 2017

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