Preprint / Nuclear Physics nucl-th/0204033

Saturation of nuclear matter and radii of unstable nuclei

Oyamatsu, K (Aichi Shukutoku Univ) ; Iida, K

12 Apr 2002

Abstract: We examine relations among the parameters characterizing the phenomenological equation of state (EOS) of nearly symmetric, uniform nuclear matter near the saturation density by comparing macroscopic calculations of radii and massesof stable nuclei with the experimental data. The EOS parameters of interest here are the symmetry energy S_0, the symmetry energy density-derivative coefficient L and the incompressibility K_0 at the normal nuclear density. We find aconstraint on the relation between K_0 and L from the empirically allowed values of the slope of the saturation line (the line joining the saturation points of nuclear matter at finite neutron excess), together with a strongcorrelation between S_0 and L. In the light of the uncertainties in the values of K_0 and L, we macroscopically calculate radii of unstable nuclei as expected to be produced in future facilities. We find that the matter radii dependstrongly on L while being almost independent of K_0, a feature that will help to determine the L value via systematic measurements of nuclear size.

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