Berlin 2005 – wissenschaftliches Programm

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HK: Physik der Hadronen und Kerne

HK 40: Theorie

HK 40.1: Gruppenbericht

Mittwoch, 9. März 2005, 14:00–14:30, TU MA005

Nuclear structure calculations of nuclei in the p- and sd-shell — •Thomas Neff¹, Alberto Cribeiro¹, Hans Feldmeier¹, Heiko Hergert², and Robert Roth² — ¹Gesellschaft für Schwerionenforschung (GSI), Darmstadt — ²Institut für Kernphysik, Technische Universität Darmstadt

The structure of nuclei in the p- and sd-shell is studied in the Fermionic Molecular Dynamics (FMD) approach. No a-priori assumptions about single-particle states or cluster features are made. Many-particle states are given by parity and angular-momentum projected Slater determinants. Projection after variation as well as variation after projection and multiconfiguration calculations in the sense of the generator coordinate method is used. An effective interaction derived from the realistic Argonne V18 interactions by means of an explicit treatment of short-range central and tensor correlations is employed for all nuclei.

The evolution of shell- and cluster properties in He, Be and C isotopes is studied. Spectra, radii, densities and formfactors are calculated and compared to experiment. First calculations of resonances within the FMD approach will be presented.
(1) R. Roth, T. Neff, H. Hergert, H. Feldmeier, Nucl. Phys. A745, 3 (2004)
(2) T. Neff, H. Feldmeier, R. Roth, Nucl. Phys. A738, 357 (2004)
(3) T. Neff, H. Feldmeier, Nucl. Phys. A713, 311 (2002)