Köln 2004 – wissenschaftliches Programm
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HK: Physik der Hadronen und Kerne
HK 6: Theory II
HK 6.8: Vortrag
Montag, 8. März 2004, 18:00–18:15, E
Nuclear structure of light nuclei in an extended FMD approach — •Thomas Neff1, Hans Feldmeier1, and Robert Roth2 — 1Gesellschaft für Schwerionenforschung, Darmstadt — 2Institut für Kernphysik, TU Darmstadt
The internal structure of light nuclei up to the drip lines is studied using FMD many-body states. The calculations make no a priori assumptions about a core or single particle-states and energies. The same correlated two-body interaction is used for all nulei. Continuum effects are included.
Energies, mass and charge radii, as well as electromagnetic transitions are calculated without using effective charges. The FMD representation provides not only a very intuitive and descriptive picture but also quantitative predictions.
Both, variaton after projection on total angular-momentum eigenstates and configuration mixing are important to understand the changes in structure with increasing neutron number. For example, the binding energies and radii near the driplines can only be reproduced when the halo neutrons are swaying collectively against the rest of the nucleus. Intrinsic clusterization is essential for a quantitative description of low lying states (e.g. C, Ne isotopes).