Shape coexistence in $^{96,98}$Sr

Abstract : The structure of neutron-rich 96,98Sr isotopes was investigated by lowenergy Coulomb excitation of radioactive beams at the REX-ISOLDE facility. Reduced transition probabilities and spectroscopic quadrupole moments were extracted from the differential Coulomb excitation cross sections. These results allow for the first time to draw 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 the rule. The experimental data suggest a significant contribution of the triaxial degree of freedom in the ground state of both isotopes. In addition, experimental information on low-lying states in 98Rb has been obtained.
Type de document :
Communication dans un congrès
6th Workshop on Nuclear Fission and Spectroscopy of Neutron-Rich Nuclei, Mar 2017, Chamrousse, France. 〈https://indico.ill.fr/indico/event/64/〉
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http://hal.in2p3.fr/in2p3-01503860
Contributeur : Michel Lion <>
Soumis le : vendredi 7 avril 2017 - 16:51:43
Dernière modification le : jeudi 15 mars 2018 - 15:03:50

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  • HAL Id : in2p3-01503860, version 1

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E. Clément, M. Zielinska, A. Görgen, W. Korten, S. Péru, et al.. Shape coexistence in $^{96,98}$Sr. 6th Workshop on Nuclear Fission and Spectroscopy of Neutron-Rich Nuclei, Mar 2017, Chamrousse, France. 〈https://indico.ill.fr/indico/event/64/〉. 〈in2p3-01503860〉

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