Eur. Phys. J. A (2005) 25: 79-80
https://doi.org/10.1140/epjad/i2005-06-034-0

ENAM 2004

Symmetry energies and the curvature of the nuclear mass surface

¹ Department of Physics, University of Michigan, 48109-1120, Ann Arbor, MI, USA
² Michigan Center for Theoretical Physics and Science, Technology and Society Program, Residential College, University of Michigan, 48109-1245, Ann Arbor, MI, USA

Received: 24 November 2004
Accepted: 18 February 2005
Published online: 20 April 2005

Abstract

A global study of the symmetry energies reflects upon the curvature of the mass surface. Special attention is given to the region from ⁵⁶Ni to ¹⁰⁰Sn. Isospin inversion is indicated for odd-odd self-conjugate nuclei. Coexistence of isoscalar and isovector n-p interactions in the localized region N ≈ Z, A = 76-96 is suggested by the isospin dependence of the symmetry energy. Experimental symmetry energies and values extracted from nine mass equations are compared. Overall agreement exists, but some distinct differences are also observed.