Collective degrees of freedom of neutron-rich A approximate to 100 nuclei and the first mass measurement of the short-lived nuclide Rb-100 - IN2P3 - Institut national de physique nucléaire et de physique des particules Access content directly
Journal Articles Physical Review C Year : 2013

Collective degrees of freedom of neutron-rich A approximate to 100 nuclei and the first mass measurement of the short-lived nuclide Rb-100

D. Atanasov
  • Function : Author
D. Beck
  • Function : Author
K. Blaum
C. Borgmann
  • Function : Author
R. B. Cakirli
  • Function : Author
T. Eronen
  • Function : Author
S. George
  • Function : Author
F. Herfurth
  • Function : Author
A. Herlert
  • Function : Author
M. Kowalska
  • Function : Author
S. Kreim
  • Function : Author
Yu. A. Litvinov
  • Function : Author
D. Lunney
  • Function : Author
D. Neidherr
  • Function : Author
M. Rosenbusch
  • Function : Author
L. Schweikhard
  • Function : Author
F. Wienholtz
  • Function : Author
R. N. Wolf
  • Function : Author
K. Zuber
  • Function : Author

Abstract

The mass surface in the A similar to 100 region of the nuclear chart is extended by the measurement of the Rb98-100 isotopes with the Penning-trap mass spectrometer ISOLTRAP at ISOLDE/CERN. The mass of Rb-100 is determined for the first time. The studied nuclides mark the known low-Z frontier of the shape transition at N = 60. To describe the shape evolution towards the krypton isotopic chain, a theoretical analysis is presented in the framework of the Hartree-Fock-Bogoliubov approach. The importance of the pairing interaction for describing the extent and strength of the region of quadrupole deformation is emphasized. A later transition to large prolate deformation or, alternatively, the predominance of oblate deformation is proposed as explanation for the different behavior of the krypton isotopes. Octupole collectivity is explored as a possible mechanism for the evolution of two-neutron separation energies around N = 56.
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in2p3-00924023 , version 1 (06-01-2014)

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V. Manea, D. Atanasov, D. Beck, K. Blaum, C. Borgmann, et al.. Collective degrees of freedom of neutron-rich A approximate to 100 nuclei and the first mass measurement of the short-lived nuclide Rb-100. Physical Review C, 2013, 88, pp.054322. ⟨10.1103/PhysRevC.88.054322⟩. ⟨in2p3-00924023⟩
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