Darmstadt 2008 – scientific programme
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HK: Fachverband Physik der Hadronen und Kerne
HK 7: Theorie
HK 7.3: Talk
Monday, March 10, 2008, 14:45–15:00, 2F
Nuclear structure calculations of Be isotopes using FMD — •Ramin Torabi1,2, Hans Feldmeier1,2, and Thomas Neff1 — 1GSI, Darmstadt — 2TU Darmstadt
The structure of light nuclei is studied using the Fermionic Molecular Dynamics (FMD) approach. The same interaction derived from the Argonne V18 interaction with the Unitary Correlator Operator Method (UCOM) is used for all nuclei.
The many-particle Hilbert space is spanned by parity and angular momentum projected Slater determinants which are created using the Generator Coordinate Method. As generator coordinate several constraints like number of oscillator quanta, radius, quadrupole, octupole or single particle j→2 are used. The expectation value of the Hamiltonian is minimized for a Slater determinant, which is projected either not at all, on total parity, on proton and neutron parity separately or on angular momentum and parity.
Since the FMD states are very flexible it is possible to describe shell and cluster model like states as well as halo states using a rather modest amount of basis states. Spectra, radii, shell model occupation numbers as well as density distributions for the Be isotopes are presented and compared to experimental data.