Octupole degree of freedom for the critical-point candidate nucleus Sm152 in a reflection-asymmetric relativistic mean-field approach

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dc.contributor.authorZhang W.
dc.contributor.authorLi Z.P.
dc.contributor.authorZhang S.Q.
dc.contributor.authorMeng J.
dc.date.accessioned2011-05-15T15:54:02Z
dc.date.available2011-05-15T15:54:02Z
dc.date.issued2010
dc.description.abstractThe potential energy surfaces of even-even Sm146-156 are investigated in the constrained reflection-asymmetric relativistic mean-field approach with parameter set PK1. It is shown that the critical-point candidate nucleus Sm152 marks the shape/phase transition not only from U(5) to SU(3) symmetry, but also from the octupole-deformed ground state in Sm150 to the quadrupole-deformed ground state in Sm154. By including the octupole degree of freedom, an energy gap near the Fermi surface for single-particle levels in Sm152 with β2=0.14~0.26 is found and the important role of the octupole deformation driving pair ν2f7/2 and ν1i13/2 is demonstrated. © 2010 The American Physical Society.
dc.description.versionArticle
dc.identifier.citationPhysical Review C - Nuclear Physics
dc.identifier.citation81
dc.identifier.citation3
dc.identifier.issn5562813
dc.identifier.other10.1103/PhysRevC.81.034302
dc.identifier.urihttp://hdl.handle.net/10019.1/8961
dc.titleOctupole degree of freedom for the critical-point candidate nucleus Sm152 in a reflection-asymmetric relativistic mean-field approach
dc.typeArticle
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