Couplings between dipole and quadrupole vibrations in tin isotopes

dc.contributor.authorSimenel, Cedric
dc.contributor.authorChomaz, Ph.
dc.date.accessioned2015-12-10T22:43:25Z
dc.date.issued2009
dc.date.updated2015-12-09T11:14:41Z
dc.description.abstractWe study the couplings between collective vibrations such as the isovector giant dipole and isoscalar giant quadrupole resonances in tin isotopes in the framework of the time-dependent Hartree-Fock theory with a Skyrme energy density functional. These couplings are a source of anharmonicity in the multiphonon spectrum. In particular, the residual interaction is known to couple the isovector giant dipole resonance with the isoscalar giant quadrupole resonance built on top of it, inducing a nonlinear evolution of the quadrupole moment after a dipole boost. This coupling also affects the dipole motion in a nucleus with a static or dynamical deformation induced by a quadrupole constraint or boost, respectively. Three methods associated with these different manifestations of the coupling are proposed to extract the corresponding matrix elements of the residual interaction. Numerical applications of the different methods to Sn132 are in good agreement with each other. Finally, several tin isotopes are considered to investigate the role of isospin and mass number on this coupling. A simple 1/A dependence of the residual matrix elements is found with no noticeable contribution from the isospin. This result is interpreted within the Goldhaber-Teller model.
dc.identifier.issn0556-2813
dc.identifier.urihttp://hdl.handle.net/1885/58161
dc.publisherAmerican Physical Society
dc.sourcePhysical Review C: Nuclear Physics
dc.titleCouplings between dipole and quadrupole vibrations in tin isotopes
dc.typeJournal article
local.bibliographicCitation.issue6
local.bibliographicCitation.startpage9
local.contributor.affiliationSimenel, Cedric, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationChomaz, Ph., CEA, Centre de Saclay
local.contributor.authoremailu4787848@anu.edu.au
local.contributor.authoruidSimenel, Cedric, u4787848
local.description.embargo2037-12-31
local.description.notesImported from ARIES
local.identifier.absfor020202 - Nuclear Physics
local.identifier.ariespublicationu4155331xPUB430
local.identifier.citationvolume80
local.identifier.doi10.1103/PhysRevC.80.064309
local.identifier.scopusID2-s2.0-73849152389
local.identifier.thomsonID000273232700019
local.identifier.uidSubmittedByu4155331
local.type.statusPublished Version

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