Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2001-01-30
Phys.Rev.C63:044321,2001
Physics
Nuclear Physics
Nuclear Theory
29 pages, 17 figures, accepted for publication in PRC
Scientific paper
10.1103/PhysRevC.63.044321
We apply recently developed effective field theory nuclear models in mean field approximation (parameter sets G1 and G2) to describe ground-state properties of nuclei from the valley of $\beta$-stability up to the drip lines. For faster calculations of open-shell nuclei we employ a modified BCS approach which takes into account quasi-bound levels owing to their centrifugal barrier, with a constant pairing strength. We test this simple prescription by comparing with available Hartree-plus-Bogoliubov results. Using the new effective parameter sets we then compute separation energies, density distributions and spin--orbit potentials in isotopic (isotonic) chains of nuclei with magic neutron (proton) numbers. The new forces describe the experimental systematics similarly to conventional non-linear $\sigma-\omega$ relativistic force parameters like NL3.
Centelles Mario
Estal Del M.
Patra Sunando Kumar
Viñas Xavier
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