Isospin effects on the mass dependence of balance energy

TL;DR

This paper investigates how isospin influences the balance energy across various nuclear masses, highlighting the dominant role of Coulomb repulsion over symmetry energy in these effects.

Contribution

It provides a comparative analysis of isospin effects on balance energy in isotopic and isobaric nuclear systems, emphasizing Coulomb repulsion's primary influence.

Findings

Coulomb repulsion mainly causes differences in balance energy between isobaric systems.

Coulomb repulsion dominates over symmetry energy in determining balance energy.

Isospin effects vary with nuclear mass and composition.

Abstract

We study the effect of isospin degree of freedom on balance energy throughout the mass range between 50 and 350 for two sets of isotopic systems with N/Z = 1.16 and 1.33 as well as isobaric systems with N/Z = 1.0 and 1.4. Our findings indicate that different values of balance energy for two isobaric systems may be mainly due to the Coulomb repulsion. We also demonstrate clearly the dominance of Coulomb repulsion over symmetry energy.