2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/138388We have investigated the isoscalar giant monopole resonance (GMR) in the Sn isotopes, using inelastic scattering of 400-MeV $α$-particles at extremely forward angles, including 0 deg. A value of -550 \pm 100 MeV has been obtained for the asymmetry term, $K_τ$, in the nuclear incompressibility.To appear in the Proceedings of the International Nuclear Physics Conference (INPC2007), Tokyo, Japan, June 3-8, 2007Nuclear Experimenttext