Probing the symmetry energy from the nuclear isoscaling

Abstract

Using different parameterizations of the nuclear mass formula, we study the sensitivity of the isoscaling parameters to the mass formula employed in grand-canonical calculations. Previous works on isoscaling have suggested that the symmetry energy implied in such calculations is anomalously smaller than that suggested by fits to nuclear masses. We show that surface corrections to the symmetry energy naturally broadens the isotopic distribution thus allowing for values of the symmetry energy which more closely match those obtained from nuclear masses.

7 pages, 4 figures

References in corpus (5)

• Experimental determination of the symmetry energy of a low density nuclear gas
• Effects of isospin and momentum dependent interactions on thermal properties of asymmetric nuclear matter
• Isospin dependent thermodynamics of fragmentation
• Multifragmentation and the symmetry term of the nuclear equation of state
• Effects of geometric constraints on the nuclear multifragmentation process

Cited by in corpus (6)

• Neutron skin thickness in droplet model with surface width dependence: indications of softness of the nuclear symmetry energy
• Isospin dependent multifragmentation of relativistic projectiles
• Temperature effects in the nuclear isoscaling
• Isospin effects and the density dependence of the nuclear symmetry energy
• Isoscaling in statistical fragment emission in an extended compound nucleus model
• Temperature dependence of nuclear matter generalized isovector symmetry energy with Skyrme-type interactions