Relation of E1 pygmy and toroidal resonances

A possible relation of low-lying E1 strength ("pygmy resonance") and toroidal strength is analyzed by using Skyrme random-phase-approximation (RPA) results for the strength functions, transition densities and current fields in 208Pb. It is shown that the irrotational pygmy motion can appea...

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Published inEPJ Web of Conferences Vol. 93; p. 1020
Main Authors Nesterenko, V.O., Repko, A., Reinhard, P.-G., Kvasil, J.
Format Journal Article Conference Proceeding
LanguageEnglish
Published Les Ulis EDP Sciences 01.01.2015
Subjects
Density
Dipoles
Lead isotopes
Strength
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Summary:A possible relation of low-lying E1 strength ("pygmy resonance") and toroidal strength is analyzed by using Skyrme random-phase-approximation (RPA) results for the strength functions, transition densities and current fields in 208Pb. It is shown that the irrotational pygmy motion can appear as a local manifestation of the collective vortical toroidal dipole resonance (TDR) at the nuclear surface. The RPA results are compared to unperturbed (1ph) ones.
Bibliography:ObjectType-Article-1
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ISBN:9782759817948
2759817946
ISSN:2100-014X
2101-6275
2100-014X
DOI:10.1051/epjconf/20159301020