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Toroidal resonance: Relation to pygmy mode, vortical properties, and anomalous deformation splitting

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Abstract

We review a recent progress in investigation of the isoscalar toroidal dipole resonance (TDR). A possible relation of the TDR and low-energy dipole excitations (also called a pygmy resonance) is analyzed. It is shown that the dipole strength in the pygmy region can be understood as a local manifestation of the collective vortical toroidalmotion at the nuclear surface. Application of the TDR as a measure of the nuclear dipole vorticity is discussed. An anomalous splitting of the TDR in deformed nuclei is inspected.

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Authors and Affiliations

  1. Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, Dubna, Russia

    V. O. Nesterenko & W. Kleinig

  2. Institute of Particle and Nuclear Physics, CharlesUniversity, Prague, Czech Republic

    J. Kvasil

  3. Department of Nuclear Physics, Institute of Physics SAS, Bratislava, Slovakia

    A. Repko

  4. Institut für Theoretische Physik II, Universität Erlangen, Erlangen, Germany

    P.-G. Reinhard

Authors
  1. V. O. Nesterenko
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  2. J. Kvasil
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  3. A. Repko
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  4. W. Kleinig
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  5. P.-G. Reinhard
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Correspondence to V. O. Nesterenko.

Additional information

Dedicated to the blessed memory of V.G. Soloviev on the occasion of the 90th anniversary of his birth

The text was submitted by the authors in English.

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Nesterenko, V.O., Kvasil, J., Repko, A. et al. Toroidal resonance: Relation to pygmy mode, vortical properties, and anomalous deformation splitting. Phys. Atom. Nuclei 79, 842–850 (2016). https://doi.org/10.1134/S106377881606020X

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  • DOI: https://doi.org/10.1134/S106377881606020X

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