Document type
ArticleVersion
Published versionPublication date
All rights reserved
Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/128277
Model dependence of the neutron-skin thickness on the symmetry energy
Journal Title
Director/Tutor
Journal ISSN
Volume Title
Related resource
Abstract
The model dependence in the correlations of the neutron-skin thickness in heavy nuclei with various symmetry-energy parameters is analyzed by using several families of systematically varied microscopic mean-field models. Such correlations show a varying degree of model dependence once the results for all the different families are combined. Some mean-field models associated with similar values of the symmetry-energy slope parameter at saturation density L , and pertaining to different families, yield a greater-than-expected spread in the neutron-skin thickness of the 208 Pb nucleus. The effective value of the symmetry-energy slope parameter L eff , determined by using the nucleon density profiles of the finite nucleus and the density derivative S ′ ( ρ ) of the symmetry energy starting from about saturation density up to low densities typical of the surface of nuclei, seems to account for the spread in the neutron-skin thickness for the models with similar L . The differences in the values of L eff are mainly due to the small differences in the nucleon density distributions of heavy nuclei in the surface region and the behavior of the symmetry energy at subsaturation densities.
Subject (English)
Citation
Citation
MONDAL, C., et al. Model dependence of the neutron-skin thickness on the symmetry energy. Physical Review C. 2016. Vol. 93, num. 064303-1-064303-9. ISSN 2469-9985. [consulted: 13 of August of 2026]. Available at: https://hdl.handle.net/2445/128277