Köln 2004 – wissenschaftliches Programm
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HK: Physik der Hadronen und Kerne
HK 13: Poster Session: Theory
HK 13.17: Poster
Dienstag, 9. März 2004, 13:30–15:30, Foyer
Skyrme-Hartree-Fock description of collective nuclear excitations — •Peter Klüpfel1, Patrick Fleischer1, Paul-Gerhard Reinhard1, Michael Bender2, and Joachim A. Maruhn3 — 1Department of Physics, University of Erlangen, Staudtstrasse 7, 91058 Erlangen — 2Department of Physics, University of Seattle — 3Department of Physics, University of Frankfurt
Low lying collective excitations (2+, 0+) are described in a microscopically supported collective model. Potentials and masses of a generalized Bohr-Hamiltonian are derived from axialy symmetric deformated Skyrme-Hartree-Fock calculations considering the dynamic response of the system. The model makes use of approximate projections (center of mass, angular momentum, particle number) and quantum corrections. Regarding the topology of the collective deformation space the properties of triaxial degrees of freedom are obtained by interpolation. These approximations are acceptable in the desired field of application - namely heavy nuclei and nuclei close to spherical symmetrie (typically semi-magic nuclei and their neighbourhood). As an application we discuss trends of collective excitations and the inherent groundstate correlations in Sn- and Pb-isotope chains as well as in α-chains of superheavy elements.