Naslov
Relativistic Hartree-Bogoliubov theory with finite range pairing forces in coordinate space : neutron halo in light nuclei

Autori
Poeschl, W.P. ; Vretenar, Dario ; Lalazissis, G.A. ; Ring, P.

Izvornik
Physical review letters (0031-9007) 79 (1997), 20; 3841-3844

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
relativistic Hartree-Bogoliubov theory; pairing forces; neutron halo

Sažetak
The Relativistic Hartree Bogoliubov (RHB) model is applied in the self-consistent mean-field approximation to the description of the neutron halo in the mass region above the s-d shell. Pairing correlations and the coupling to particle continuum states are described by finite range two-body forces. Finite element methods are used in the coordinate space discretization of the coupled system of Dirac-Hartree-Bogoliubov integro-differential eigenvalue equations, and Klein-Gordon equations for the meson fields. Calculations are performed for the isotopic chains of Ne and C nuclei. We find evidence for the occurrence of neutron halo in heavier Ne isotopes. The properties of the 1f-2p orbitals near the Fermi level and the neutron pairing interaction play a crucial role in the formation of the halo. Our calculations display no evidence for the neutron halo phenomenon in C isotopes.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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