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

MPS-Authors
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Atanasov,  Dinko
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Blaum,  Klaus
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Borgmann,  Christopher
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Cakirli,  R. Burcu
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Eronen,  Tommi
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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George,  Sebastian
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Kreim,  Susanne
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;
CERN;

External Resource

http://link.aps.org/doi/10.1103/PhysRevC.88.054322
(Publisher version)

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Citation

Manea, V., Atanasov, D., Beck, D., Blaum, K., Borgmann, C., Cakirli, R. B., et al. (2013). Collective degrees of freedom of neutron-rich A ≈ 100 nuclei and the first mass measurement of the short-lived nuclide 100Rb. Physical Review C, 88(5): 054322, pp. 1-10. doi:10.1103/PhysRevC.88.054322.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0014-B91A-4
Abstract
The mass surface in the A ∼ 100 region of the nuclear chart is extended by the measurement of the 98–100Rb isotopes with the Penning-trap mass spectrometer ISOLTRAP at ISOLDE/CERN. The mass of 100Rb 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.