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Title: Dynamics of nuclear single-particle structure in covariant theory of particle-vibration coupling: From light to superheavy nuclei

Abstract

The impact of particle-vibration coupling and polarization effects due to deformation and time-odd mean fields on single-particle spectra is studied systematically in doubly magic nuclei from low-mass {sup 56}Ni up to superheavy ones. Particle-vibration coupling is treated fully self-consistently within the framework of the relativistic particle-vibration coupling model. Polarization effects due to deformation and time-odd mean field induced by odd particle are computed within covariant density functional theory. It has been found that among these contributions the coupling to vibrations makes a major impact on the single-particle structure. The impact of particle-vibration coupling and polarization effects on calculated single-particle spectra, the size of the shell gaps, the spin-orbit splittings and the energy splittings in pseudospin doublets is discussed in detail; these physical observables are compared with experiment. Particle-vibration coupling has to be taken into account when model calculations are compared with experiment since this coupling is responsible for observed fragmentation of experimental levels; experimental spectroscopic factors are reasonably well described in model calculations.

Authors:
;  [1];  [2]
  1. GSI Helmholtzzentrum fuer Schwerionenforschung, D-64291 Darmstadt, Germany and Institut fuer Theoretische Physik, Goethe-Universitaet, D-60438 Frankfurt am Main (Germany)
  2. (United States)
Publication Date:
OSTI Identifier:
21596551
Resource Type:
Journal Article
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
Journal Volume: 84; Journal Issue: 1; Other Information: DOI: 10.1103/PhysRevC.84.014305; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0556-2813
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; COUPLING; DEFORMATION; DENSITY FUNCTIONAL METHOD; HEAVY NUCLEI; MAGIC NUCLEI; MASS; MEAN-FIELD THEORY; NICKEL 56; PARTICLE STRUCTURE; POLARIZATION; RELATIVISTIC RANGE; SPECTRA; SPECTROSCOPIC FACTORS; TRANSACTINIDE ELEMENTS; BETA DECAY RADIOISOTOPES; BETA-PLUS DECAY RADIOISOTOPES; CALCULATION METHODS; DAYS LIVING RADIOISOTOPES; DIMENSIONLESS NUMBERS; ELECTRON CAPTURE RADIOISOTOPES; ELEMENTS; ENERGY RANGE; EVEN-EVEN NUCLEI; INTERMEDIATE MASS NUCLEI; ISOTOPES; NICKEL ISOTOPES; NUCLEI; RADIOISOTOPES; TRANSPLUTONIUM ELEMENTS; TRANSURANIUM ELEMENTS; VARIATIONAL METHODS

Citation Formats

Litvinova, E. V., Afanasjev, A. V., and Department of Physics and Astronomy, Mississippi State University, Mississippi 39762. Dynamics of nuclear single-particle structure in covariant theory of particle-vibration coupling: From light to superheavy nuclei. United States: N. p., 2011. Web. doi:10.1103/PHYSREVC.84.014305.
Litvinova, E. V., Afanasjev, A. V., & Department of Physics and Astronomy, Mississippi State University, Mississippi 39762. Dynamics of nuclear single-particle structure in covariant theory of particle-vibration coupling: From light to superheavy nuclei. United States. doi:10.1103/PHYSREVC.84.014305.
Litvinova, E. V., Afanasjev, A. V., and Department of Physics and Astronomy, Mississippi State University, Mississippi 39762. Fri . "Dynamics of nuclear single-particle structure in covariant theory of particle-vibration coupling: From light to superheavy nuclei". United States. doi:10.1103/PHYSREVC.84.014305.
@article{osti_21596551,
title = {Dynamics of nuclear single-particle structure in covariant theory of particle-vibration coupling: From light to superheavy nuclei},
author = {Litvinova, E. V. and Afanasjev, A. V. and Department of Physics and Astronomy, Mississippi State University, Mississippi 39762},
abstractNote = {The impact of particle-vibration coupling and polarization effects due to deformation and time-odd mean fields on single-particle spectra is studied systematically in doubly magic nuclei from low-mass {sup 56}Ni up to superheavy ones. Particle-vibration coupling is treated fully self-consistently within the framework of the relativistic particle-vibration coupling model. Polarization effects due to deformation and time-odd mean field induced by odd particle are computed within covariant density functional theory. It has been found that among these contributions the coupling to vibrations makes a major impact on the single-particle structure. The impact of particle-vibration coupling and polarization effects on calculated single-particle spectra, the size of the shell gaps, the spin-orbit splittings and the energy splittings in pseudospin doublets is discussed in detail; these physical observables are compared with experiment. Particle-vibration coupling has to be taken into account when model calculations are compared with experiment since this coupling is responsible for observed fragmentation of experimental levels; experimental spectroscopic factors are reasonably well described in model calculations.},
doi = {10.1103/PHYSREVC.84.014305},
journal = {Physical Review. C, Nuclear Physics},
issn = {0556-2813},
number = 1,
volume = 84,
place = {United States},
year = {2011},
month = {7}
}