Neutron halos in heavy nuclei -- relativistic mean field approach

Abstract

Assuming a~simple spherical relativistic mean field model of the nucleus, we estimate the width of the antiproton--neutron annihilation (${\Gamma }_n$) and the width of antiproton--proton (${\Gamma }_p$) annihilation, in an antiprotonic atom system. This allows us to determine the halo factor $f$, which is then discussed in the context of experimental data obtained in measurements recently done on LEAR utility at CERN. Another quantity which characterizes the deviation of the average nuclear densities ratio from the corresponding ratio of the homogeneous densities is introduced too. It was shown that it is also a good indicator of the neutron halo. The results are compared to experimental data as well as to the data of the simple liquid droplet model of the nuclear densities. The single particle structure of the nuclear density tail is discusssed also.

revtex, 12 pages + 6 postscript figures

References in corpus (2)

• Antiprotonic studies of nuclear neutron haloes
• Nuclear Neutron Haloes as Seen by Antiprotons

Cited by in corpus (6)

• Nuclear Skins and Halos in the Mean-Field Theory
• Analysis of bulk and surface contributions in the neutron skin of nuclei
• Composition of the nuclear periphery from antiproton absorption
• The Neutron Halo in Heavy Nuclei Calculated with the Gogny Force
• Influence of the single-particle structure on the nuclear surface and the neutron skin
• Nuclear Periphery in Mean-Field Models