Structure of giant quadrupole resonances in neutron drip line nuclei
- Department of Mathematical Physics, Lund Institute of Technology at University of Lund, Lund (Sweden)
- Center for Mathematical Sciences, University of Aizu, Ikki-machi, Aizu-Wakamatsu, Fukushima 965 (Japan)
- Institute of Atomic Energy, Beijing, The People`s Republic of (China)
We study the giant quadrupole resonances in the neutron drip line nucleus, {sub 8}{sup 28}O{sub 20}, using the self-consistent Hartree-Fock calculation plus the random-phase approximation (RPA) with Skyrme interactions. Including simultaneously both the isoscalar and the isovector correlation, the RPA response function is calculated in the coordinate space so as to take into account properly the continuum effect. Though in neutron drip line nuclei the distribution of the quadrupole strength is much affected by the presence of the low-energy threshold strength, the isoscalar and the isovector correlation structure as well as the transition densities of the isoscalar giant resonance are in good agreement with those given by the collective model. In contrast, the transition density of the isovector giant resonance shows a clear deviation from that of the liquid-drop polarization mode. {copyright} {ital 1997} {ital The American Physical Society}
- OSTI ID:
- 496856
- Journal Information:
- Physical Review, C, Journal Name: Physical Review, C Journal Issue: 5 Vol. 55; ISSN PRVCAN; ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
Similar Records
Isoscalar and isovector dipole mode in {beta}-stable and drip line nuclei
Single-particle and collective properties of drip-line nuclei