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Interplay between isoscalar and isovector correlations in neutron-rich nuclei

Hamamoto, Ikuko LU and Sagawa, Hiroyuki (2017) In Physical Review C 96(6).
Abstract

The interplay between isoscalar and isovector correlations in the 1- states in neutron-rich (N≠Z) even-even nuclei is studied, taking as examples of the nuclei, O14822 and O16824. The excitation modes explored are isovector dipole and isoscalar compression dipole modes. The self-consistent Hartree-Fock plus the random-phase approximation with the Skyrme interaction, SLy4, is solved in coordinate space so as to take properly into account the continuum effect. The isovector peak induced by isoscalar correlation, the isoscalar peak induced by isovector correlation, and the possible collective states made by both isoscalar and isovector correlations ("iS-iV pigmy resonance") are shown. The strong neutron-proton interaction in nuclei can be... (More)

The interplay between isoscalar and isovector correlations in the 1- states in neutron-rich (N≠Z) even-even nuclei is studied, taking as examples of the nuclei, O14822 and O16824. The excitation modes explored are isovector dipole and isoscalar compression dipole modes. The self-consistent Hartree-Fock plus the random-phase approximation with the Skyrme interaction, SLy4, is solved in coordinate space so as to take properly into account the continuum effect. The isovector peak induced by isoscalar correlation, the isoscalar peak induced by isovector correlation, and the possible collective states made by both isoscalar and isovector correlations ("iS-iV pigmy resonance") are shown. The strong neutron-proton interaction in nuclei can be responsible for controlling the isospin structure of normal modes. It is explicitly shown that in the scattering by isoscalar (isovector) particles on N≠Z even-even nuclei isovector (isoscalar) strength in addition to isoscalar (isovector) strength may be populated.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review C
volume
96
issue
6
publisher
American Physical Society
external identifiers
  • scopus:85038447737
  • wos:000418187800002
ISSN
2469-9985
DOI
10.1103/PhysRevC.96.064312
language
English
LU publication?
yes
id
8e6f3d58-5888-41b2-8069-f1f6f438da41
date added to LUP
2018-01-03 11:06:40
date last changed
2018-01-16 13:28:47
@article{8e6f3d58-5888-41b2-8069-f1f6f438da41,
  abstract     = {<p>The interplay between isoscalar and isovector correlations in the 1- states in neutron-rich (N≠Z) even-even nuclei is studied, taking as examples of the nuclei, O14822 and O16824. The excitation modes explored are isovector dipole and isoscalar compression dipole modes. The self-consistent Hartree-Fock plus the random-phase approximation with the Skyrme interaction, SLy4, is solved in coordinate space so as to take properly into account the continuum effect. The isovector peak induced by isoscalar correlation, the isoscalar peak induced by isovector correlation, and the possible collective states made by both isoscalar and isovector correlations ("iS-iV pigmy resonance") are shown. The strong neutron-proton interaction in nuclei can be responsible for controlling the isospin structure of normal modes. It is explicitly shown that in the scattering by isoscalar (isovector) particles on N≠Z even-even nuclei isovector (isoscalar) strength in addition to isoscalar (isovector) strength may be populated.</p>},
  articleno    = {064312},
  author       = {Hamamoto, Ikuko and Sagawa, Hiroyuki},
  issn         = {2469-9985},
  language     = {eng},
  month        = {12},
  number       = {6},
  publisher    = {American Physical Society},
  series       = {Physical Review C},
  title        = {Interplay between isoscalar and isovector correlations in neutron-rich nuclei},
  url          = {http://dx.doi.org/10.1103/PhysRevC.96.064312},
  volume       = {96},
  year         = {2017},
}