Competition between pairing correlations and deformation from the odd-even mass staggering of francium and radium isotopes | Zendy

S. Kreim | Zendy; D. Beck | Zendy; K. Blaum | Zendy; Ch. Borgmann | Zendy; M. Breitenfeldt | Zendy; T. E. Cocolios | Zendy; A. Gottberg | Zendy; F. Herfurth | Zendy; M. Kowalska | Zendy; Yu. A. Litvinov | Zendy; D. Lunney | Zendy; V. Manea | Zendy; Teresa Mendonça | Zendy; S. Naimi | Zendy; D. Neidherr | Zendy; M. Rosenbusch | Zendy; L. Schweikhard | Zendy; T. Stora | Zendy; F. Wienholtz | Zendy; R. Wolf | Zendy; Κ. Zuber | Zendy

Open Access

Competition between pairing correlations and deformation from the odd-even mass staggering of francium and radium isotopes

Author(s) -

S. Kreim,

D. Beck,

K. Blaum,

Ch. Borgmann,

M. Breitenfeldt,

T. E. Cocolios,

A. Gottberg,

F. Herfurth,

M. Kowalska,

Yu. A. Litvinov,

D. Lunney,

V. Manea,

Teresa Mendonça,

S. Naimi,

D. Neidherr,

M. Rosenbusch,

L. Schweikhard,

T. Stora,

F. Wienholtz,

R. Wolf,

Κ. Zuber

Publication year - 2014

Publication title -

physical review c

Language(s) - English

Resource type - Journals

eISSN - 1089-490X

pISSN - 0556-2813

DOI - 10.1103/physrevc.90.024301

Subject(s) - physics , pairing , atomic physics , nuclear physics , radium , isotope , penning trap , neutron , electron , condensed matter physics , superconductivity

The masses of Fr-222,Fr-224,Fr-226-233 and Ra-233,Ra-234 have been determined with the Penning-trap mass spectrometer ISOLTRAP at the ISOLDE facility at CERN, including the previously unknown mass and half-life of Fr-233. We study the evolution of the odd-even staggering of binding energies along the francium and radium isotopic chains and of its lowest-order estimator, Delta(3)(N). An enhancement of the staggering of Delta(3)(N) is observed towards neutron number N = 146, which points to contributions beyond pairing correlations. These contributions are investigated in the Hartree-Fock and Hartree-Fock-Bogoliubov approaches, emphasizing the connections to the single-particle level density and nuclear deformation

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