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Spreading widths of giant resonances in spherical nuclei : Damped transient response

Severyukhin, A. P.; Åberg, S. LU ; Arsenyev, N. N. and Nazmitdinov, R. G. (2017) In Physical Review C: covering nuclear physics 95(6).
Abstract

We propose a general approach to describe spreading widths of monopole, dipole, and quadrupole giant resonances in heavy and superheavy spherical nuclei. Our approach is based on the ideas of the random matrix distribution of the coupling between one-phonon and two-phonon states generated in the random-phase approximation. We use the Skyrme interaction SLy4 as our model Hamiltonian to create a single-particle spectrum and to analyze excited states of the doubly magic nuclei Sn132, Pb208, and 126310. Our results demonstrate that the approach enables to us to describe a gross structure of the spreading widths of the giant resonances considered.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review C: covering nuclear physics
volume
95
issue
6
publisher
American Physical Society
external identifiers
  • scopus:85020822741
  • wos:000403072800001
ISSN
2469-9985
DOI
10.1103/PhysRevC.95.061305
language
English
LU publication?
yes
id
971d84ec-115f-4621-8484-17314265fcc0
date added to LUP
2017-07-04 10:37:42
date last changed
2017-09-18 11:37:38
@article{971d84ec-115f-4621-8484-17314265fcc0,
  abstract     = {<p>We propose a general approach to describe spreading widths of monopole, dipole, and quadrupole giant resonances in heavy and superheavy spherical nuclei. Our approach is based on the ideas of the random matrix distribution of the coupling between one-phonon and two-phonon states generated in the random-phase approximation. We use the Skyrme interaction SLy4 as our model Hamiltonian to create a single-particle spectrum and to analyze excited states of the doubly magic nuclei Sn132, Pb208, and 126310. Our results demonstrate that the approach enables to us to describe a gross structure of the spreading widths of the giant resonances considered.</p>},
  articleno    = {061305},
  author       = {Severyukhin, A. P. and Åberg, S. and Arsenyev, N. N. and Nazmitdinov, R. G.},
  issn         = {2469-9985},
  language     = {eng},
  month        = {06},
  number       = {6},
  publisher    = {American Physical Society},
  series       = {	Physical Review C: covering nuclear physics},
  title        = {Spreading widths of giant resonances in spherical nuclei : Damped transient response},
  url          = {http://dx.doi.org/10.1103/PhysRevC.95.061305},
  volume       = {95},
  year         = {2017},
}