2009/09/30 by V. M. Kolomietz, A. I. Sanzhur · 1 citation
Physics and Astronomy · #Advanced Chemical Physics Studies #Astronomical and nuclear sciences #Nuclear physics research studies #nucl-th
paper · pdf · doi:10.1103/physrevc.81.024324
published as Phys.Rev.C81:024324,2010 · 10 pages, 4 figures References added, small text and abstract changes
arxiv created 2009/12/22 · openalex publication_date 2010/02/24 · arxiv updated 2010/04/06 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We suggest the procedure of direct derivation of the symmetry energy from the shift of neutron-proton chemical potentials \ensuremathΔ\ensuremathλ=\ensuremathλn\ensuremath-\ensuremathλp for nuclei beyond the \ensuremathβ-stability line. We observe the presence of anomalous strong (about 15%) shell oscillations at the symmetry energy coefficient bsym. Our results do not confirm the existence of exceptionally large values of the symmetry energy coefficient at mass number A\ensuremath≈100 that was reported in Ref. [2]. Using the fitting procedure, we evaluate the volume bsym,vol and surface bsym,surf contributions to the symmetry energy. We estimate the experimental value of surface-to-volume ratio as rS/V=|bsym,surf|/bsym,vol\ensuremath≈1.7 for the fitting interval A\ensuremath\geqslant50.