| Issue |
EPJ Web of Conferences
Volume 93, 2015
CGS15 – Capture Gamma-Ray Spectroscopy and Related Topics
|
|
|---|---|---|
| Article Number | 01020 | |
| Number of page(s) | 4 | |
| Section | Nuclear Structure | |
| DOI | https://doi.org/10.1051/epjconf/20159301020 | |
| Published online | 28 May 2015 | |
https://doi.org/10.1051/epjconf/20159301020
Relation of E1 pygmy and toroidal resonances
1 Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, Dubna, Moscow region, 141980, Russia
2 Institute of Particle and Nuclear Physics, Charles University, CZ-18000, Praha 8, Czech Republic
3 Institut für Theoretische Physik II, Universität Erlangen, D-91058, Erlangen, Germany
a e-mail: nester@theor.jinr.ru
Published online: 28 May 2015
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.
© Owned by the authors, published by EDP Sciences, 2015
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