Eur. Phys. J. A 12, 169-184 (2001)
Combinatorial nuclear level densities based on the Gogny nucleon-nucleon effective interaction
S. Hilaire, J.P. Delaroche and M. GirodCommissariat à l'Energie Atomique, Service de Physique Nucléaire, Boîte Postale 12, 91680 Bruyères-le-Châtel, France stephane.hilaire@cea.fr
(Received: 13 February 2001 / Revised version: 17 September 2001 Communicated by P. Schuck)
Abstract
A combinatorial method to calculate total level densities
from an arbitrary single-particle level scheme is presented. Parity,
angular momentum, pairing correlations as well as collective
enhancements are explicitly treated. This method is employed using
single-particle level schemes obtained from Hartree-Fock-Bogoliubov
calculations based on the Gogny effective interaction. Sixty five
even-even nuclei with masses
are considered.
Rather good agreements are obtained when comparing our predictions
with experimental data for energies of the order of the neutron
binding energies and for low excitation energies where discrete
levels are experimentally observed.
24.10.Pa - Thermal and statistical models.
21.60.Jz - Hartree-Fock and random-phase approximations.
21.10.Re - Collective levels.
© Società Italiana di Fisica, Springer-Verlag 2001
