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Spectroscopic Quadrupole Moments in ^{96,98}Sr: Evidence for Shape Coexistence in Neutron-Rich Strontium Isotopes at N=60.

Clément, E ; Zielińska, M ; Görgen, A ; Korten, W ; Péru, S ; Libert, J ; Goutte, H ; Hilaire, S ; Bastin, B and Bauer, C , et al. (2016) In Physical Review Letters 116(2).
Abstract
Neutron-rich ^{96,98}Sr isotopes have been investigated by safe Coulomb excitation of radioactive beams at the REX-ISOLDE facility. Reduced transition probabilities and spectroscopic quadrupole moments have been extracted from the differential Coulomb excitation cross sections. These results allow, for the first time, the drawing of definite conclusions about the shape coexistence of highly deformed prolate and spherical configurations. In particular, a very small mixing between the coexisting states is observed, contrary to other mass regions where strong mixing is present. Experimental results have been compared to beyond-mean-field calculations using the Gogny D1S interaction in a five-dimensional collective Hamiltonian formalism, which... (More)
Neutron-rich ^{96,98}Sr isotopes have been investigated by safe Coulomb excitation of radioactive beams at the REX-ISOLDE facility. Reduced transition probabilities and spectroscopic quadrupole moments have been extracted from the differential Coulomb excitation cross sections. These results allow, for the first time, the drawing of definite conclusions about the shape coexistence of highly deformed prolate and spherical configurations. In particular, a very small mixing between the coexisting states is observed, contrary to other mass regions where strong mixing is present. Experimental results have been compared to beyond-mean-field calculations using the Gogny D1S interaction in a five-dimensional collective Hamiltonian formalism, which reproduce the shape change at N=60. (Less)
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review Letters
volume
116
issue
2
article number
022701
publisher
American Physical Society
external identifiers
  • pmid:26824536
  • wos:000368286300004
  • scopus:84954492687
  • pmid:26824536
ISSN
1079-7114
DOI
10.1103/PhysRevLett.116.022701
language
English
LU publication?
yes
id
79446543-6437-4a16-a833-7a8e0d5fb6af (old id 8572913)
date added to LUP
2016-04-01 10:17:39
date last changed
2025-04-04 14:37:23
@article{79446543-6437-4a16-a833-7a8e0d5fb6af,
  abstract     = {{Neutron-rich ^{96,98}Sr isotopes have been investigated by safe Coulomb excitation of radioactive beams at the REX-ISOLDE facility. Reduced transition probabilities and spectroscopic quadrupole moments have been extracted from the differential Coulomb excitation cross sections. These results allow, for the first time, the drawing of definite conclusions about the shape coexistence of highly deformed prolate and spherical configurations. In particular, a very small mixing between the coexisting states is observed, contrary to other mass regions where strong mixing is present. Experimental results have been compared to beyond-mean-field calculations using the Gogny D1S interaction in a five-dimensional collective Hamiltonian formalism, which reproduce the shape change at N=60.}},
  author       = {{Clément, E and Zielińska, M and Görgen, A and Korten, W and Péru, S and Libert, J and Goutte, H and Hilaire, S and Bastin, B and Bauer, C and Blazhev, A and Bree, N and Bruyneel, B and Butler, P A and Butterworth, J and Delahaye, P and Dijon, A and Doherty, D T and Ekström, Andreas and Fitzpatrick, C and Fransen, C and Georgiev, G and Gernhäuser, R and Hess, H and Iwanicki, J and Jenkins, D G and Larsen, A C and Ljungvall, J and Lutter, R and Marley, P and Moschner, K and Napiorkowski, P J and Pakarinen, J and Petts, A and Reiter, P and Renstrøm, T and Seidlitz, M and Siebeck, B and Siem, S and Sotty, C and Srebrny, J and Stefanescu, I and Tveten, G M and Van de Walle, J and Vermeulen, M and Voulot, D and Warr, N and Wenander, F and Wiens, A and De Witte, H and Wrzosek-Lipska, K}},
  issn         = {{1079-7114}},
  language     = {{eng}},
  number       = {{2}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review Letters}},
  title        = {{Spectroscopic Quadrupole Moments in ^{96,98}Sr: Evidence for Shape Coexistence in Neutron-Rich Strontium Isotopes at N=60.}},
  url          = {{http://dx.doi.org/10.1103/PhysRevLett.116.022701}},
  doi          = {{10.1103/PhysRevLett.116.022701}},
  volume       = {{116}},
  year         = {{2016}},
}