Skyrme-Hartree-Fock approach to a proton halo in the first excited state of

Authors: Ren, Z.; Faessler, A.

Source: Journal of Physics G: Nuclear and Particle Physics, Volume 24, Number 9, 1998 , pp. 1823-1830(8)

Publisher: IOP Publishing

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Abstract:

The Skyrme-Hartree-Fock model with standard force parameters is applied to the newly discovered proton halo in the first excited state of (Morlock R et al 1997 Phys. Rev. Lett. 79 3837). Calculations show that this model can approximately reproduce the ground-state properties of and the proton halo in the excited state if a set of force parameters with a low incompressibility of nuclear matter is used. The calculated root-mean-square radius of a valence proton in the orbit or is only slightly smaller than the experimental data. An effective nucleon-nucleon force with a low incompressibility is necessary for a successful description of the proton halo in the first excited state of . A halo nucleus is very soft compared with normal nuclei and the low incompressibility produces a large surface thickness for finite nuclei.

Document Type: Miscellaneous

Affiliations: Institute of Theoretical Physics, University of Tuebingen, Auf der Morgenstelle 14, D-72076 Tuebingen, Germany

Publication date: January 1, 1998

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