Triple configuration coexistence in 44 S
Date
2011
Authors
Santiago-Gonzalez, D.
Wiedenhover, I.
Abramkina, V.
Avila, M.L.
Baugher, T.
Bazin, D.
Brown, B A
Cottle, P.D.
Gade, A
Glasmacher, Thomas
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Volume Title
Publisher
American Physical Society
Abstract
The neutron-rich N=28 nucleus S44 was studied using the two-proton knockout reaction from Ar46 at intermediate beam energy. We report the observation of four new excited states, one of which is a strongly prolate deformed 4 + state, as indicated by a shell-model calculation. Its deformation originates in a neutron configuration which is fundamentally different from the "intruder" configuration responsible for the ground-state deformation. Consequently, we do not have three coexisting shapes in S44, but three coexisting configurations, corresponding to zero-, one-, and two-neutron particle-hole excitations. � 2011 American Physical Society.
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Source
Physical Review C: Nuclear Physics
Type
Journal article
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Open Access