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Journal articles
Spectroscopic Quadrupole Moments in $^{96;98}$Sr: Evidence for Shape Coexistence in Neutron-Rich Strontium Isotopes at N = 60
E. Clément
1
M. Zielińska
2
A. Görgen
W. Korten
2
S. Péru
3
J. Libert
3
H. Goutte
2
S. Hilaire
3
B. Bastin
1
C. Bauer
A. Blazhev
N. Bree
B. Bruyneel
P. A. Butler
J. Butterworth
P. Delahaye
1
A. Dijon
1
D. T. Doherty
A. Ekström
C. Fitzpatrick
C. Fransen
G. Georgiev
4
R. Gernhäuser
H. Hess
J. Iwanicki
D.G. Jenkins
A.C. Larsen
J. Ljungvall
4
R. Lutter
P. Marley
K. Moschner
P. J. Napiorkowski
J. Pakarinen
A. Petts
P. Reiter
T. Renstrøm
M. Seidlitz
B. Siebeck
S. Siem
C. Sotty
4
J. Srebrny
I. Stefanescu
G.M. Tveten
J. van De Walle
M. Vermeulen
D. Voulot
N. Warr
F. Wenander
A. Wiens
H. De Witte
K. Wrzosek-Lipska
1
GANIL - Grand Accélérateur National d'Ions Lourds (Bvd Henri Becquerel - BP 55027 - 14076 CAEN CEDEX 5 - France)
- CEA - Commissariat à l'énergie atomique et aux énergies alternatives : DRF/GANIL (Centre de Saclay Centre de Grenoble Centre de Cadarache etc - France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
- CNRS - Centre National de la Recherche Scientifique : UPR3266 (France)
2
DPHN - Département de Physique Nucléaire (ex SPhN) (France)
- IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers : DRF/IRFU/DPHN (CEA Saclay
F-91191 Gif sur Yvette cedex - France)
- CEA - Commissariat à l'énergie atomique et aux énergies alternatives : DRF/IRFU (Centre de Saclay Centre de Grenoble Centre de Cadarache etc - France)
- Université Paris-Saclay (Espace Technologique, Bat. Discovery - RD 128 - 2e ét., 91190 Saint-Aubin - France)
3
DAM - Direction des Applications Militaires (France)
- CEA - Commissariat à l'énergie atomique et aux énergies alternatives : DAM (Centre de Saclay Centre de Grenoble Centre de Cadarache etc - France)
4
CSNSM SNO - Centre de Sciences Nucléaires et de Sciences de la Matière ( Univ. Paris-Sud, CNRS/IN2P3, Université Paris-Saclay, 91405 Orsay - France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
- Université Paris-Saclay (Espace Technologique, Bat. Discovery - RD 128 - 2e ét., 91190 Saint-Aubin - France)
- Univ. Paris-Sud (Univ. Paris-Sud, 91405 Orsay - France)
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.
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http://hal.in2p3.fr/in2p3-01257200
Contributor : Michel Lion <>
Submitted on : Friday, January 15, 2016 - 9:49:03 PM
Last modification on : Monday, February 10, 2020 - 6:14:09 PM
Contributor : Michel Lion <>
Submitted on : Friday, January 15, 2016 - 9:49:03 PM
Last modification on : Monday, February 10, 2020 - 6:14:09 PM
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- HAL Id : in2p3-01257200, version 1
- DOI : 10.1103/PhysRevLett.116.022701
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E. Clément, M. Zielińska, A. Görgen, W. Korten, S. Péru, et al.. Spectroscopic Quadrupole Moments in $^{96;98}$Sr: Evidence for Shape Coexistence in Neutron-Rich Strontium Isotopes at N = 60. Physical Review Letters, American Physical Society, 2016, 116, pp.022701. ⟨10.1103/PhysRevLett.116.022701⟩. ⟨in2p3-01257200⟩
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