The Giant Monopole Resonance in the $^{112-124}$Sn Isotopes and the Symmetry Energy Term in Nuclear Incompressibility

TL;DR

This study measures the giant monopole resonance in tin isotopes to determine the symmetry energy term in nuclear incompressibility, providing insights into nuclear matter properties relevant for astrophysics.

Contribution

It reports a precise measurement of the asymmetry term $K_\tau$ in nuclear incompressibility using inelastic alpha scattering on Sn isotopes, advancing understanding of nuclear matter.

Findings

Determined $K_\tau$ to be -550 ± 100 MeV.

Provided new constraints on the symmetry energy in nuclear matter.

Enhanced understanding of nuclear incompressibility in isotopes.

Abstract

We have investigated the isoscalar giant monopole resonance (GMR) in the Sn isotopes, using inelastic scattering of 400-MeV $\alpha$-particles at extremely forward angles, including 0 deg. A value of -550 \pm 100 MeV has been obtained for the asymmetry term, $K_\tau$, in the nuclear incompressibility.