THE ROLE OF 1P1H-CIRCLE-TIMES-PHONON GROUND-STATE CORRELATIONS IN THEISOSCALAR EO EXCITATIONS OF MAGIC NUCLEI

Authors
KAMERDZHIEV S TERTYCHNY G SPETH J WAMBACH J
Citation
S. Kamerdzhiev et al., THE ROLE OF 1P1H-CIRCLE-TIMES-PHONON GROUND-STATE CORRELATIONS IN THEISOSCALAR EO EXCITATIONS OF MAGIC NUCLEI, Nuclear physics. A, 577(3-4), 1994, pp. 641-652
Citations number
26
Categorie Soggetti
Physics, Nuclear
Journal title
Nuclear physics. A → ACNP
ISSN journal
03759474
Volume
577
Issue
3-4
Year of publication
1994
Pages
641 - 652
Database
ISI
SICI code
0375-9474(1994)577:3-4<641:TRO1GC>2.0.ZU;2-6
Abstract
The isoscalar E0 strength functions in Ca-40, Ca-48, (208)pb and for t he unstable nucleus Ni-56, calculated within an approach which incorpo rates RPA configurations including the single-particle continuum as we ll as complex 1p1h circle times phonon configurations. New effects due to a consistent treatment of ground-state correlations are found. We obtain appreciable E0 strength in the low-energy region for Pb-208 and Ni-56. In Ca-40 the effect is so strong that the strength is very fra gmented. Reasonable agreement with available experiments is obtained f or Pb-208 including the width.