Masses and Radii of the Nuclei with N>=Z in an Alpha-Cluster Model

Details Masses and Radii of the Nuclei with N>=Z in an Alpha-Cluster Model Masses and Radii of the Nuclei with N>=Z in an Alpha-Cluster Model

2009-11-05

arxiv.org/abs/0911.0987v1

Int.J.Mod.Phys.E19:1205-1211,2010

Physics

Nuclear Physics

Nuclear Theory

7 pages, 3 eps figures, submitted as a contribution to the Proceedings of the International Conference, Messina, Italy, Octobe

Scientific paper

10.1142/S0218301310015680

In the framework of a recently developed alpha-cluster model a nucleus is represented as a core (alpha-cluster liquid drop with dissolved excess neutron pairs in it) and a nuclear molecule on its surface. From analysis of experimental nuclear binding energies one can find the number of alpha-clusters in the molecule and calculate the nuclear charge radii. It was shown that for isotopes of one Z with growing A the number of alpha-clusters in the molecule decreases to three, which corresponds to the nucleus 12C for even Z and 15N for odd Z, and the specific density of the core binding energy \rho grows and reaches its saturation value. In this paper it is shown that the value \rho=2.55 MeV/fm^3 explains the particular number of excess neutrons in stable nuclei.

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