Excitation energy and strength of the pygmy dipole resonance in stable tin isotopes

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dc.creatorÖzel, B.
dc.creatorEnders, J.
dc.creatorLenske, H.
dc.creatorvon Neumann-Cosel, P.
dc.creatorPoltoratska, I.
dc.creatorPonomarev, V. Yu.
dc.creatorRichter, A.
dc.creatorSavran, D.
dc.creatorTsoneva, N.
dc.date2009-01-16
dc.date.accessioned2026-07-07T12:31:03Z
dc.date.available2026-07-07T12:31:03Z
dc.descriptionThe $^{112,120}$Sn$(γ,γ')$ reactions have been studied at the S-DALINAC. Electric dipole (E1) strength distributions have been determined including contributions from unresolved strength extracted by a fluctuation analysis. Together with available data on $^{116,124}$Sn, an experimental systematics of the pygmy dipole resonance (PDR) in stable even-mass tin isotopes is established. The PDR centroid excitation energies and summed strengths are in reasonable agreement with quasiparticle-phonon model calculations based on a nonrelativistic description of the mean field but disagree with relativistic quasiparticle random-phase approximation predictions.
dc.descriptionsubmitted to Phys. Lett. B
dc.identifierhttps://arxiv.org/abs/0901.2443
dc.identifierhttp://arxiv.org/abs/0901.2443
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/216323
dc.subjectNuclear Experiment
dc.titleExcitation energy and strength of the pygmy dipole resonance in stable tin isotopes
dc.typetext

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