Excitation of Giant Monopole Resonance in $^{208}$Pb and $^{116}$Sn Using Inelastic Deuteron Scattering

TL;DR

This study demonstrates that inelastic deuteron scattering at 100 MeV/u effectively excites the giant monopole resonance in lead and tin isotopes, providing a new method for exploring nuclear compressibility in radioactive isotopes.

Contribution

It introduces deuteron inelastic scattering at 100 MeV/u as a viable probe for ISGMR, enabling studies in radioactive isotopes via inverse kinematics.

Findings

Deuteron scattering results agree with alpha particle scattering data.

Deuteron scattering effectively excites ISGMR in $^{116}$Sn and $^{208}$Pb.

Method enables future investigations of ISGMR in radioactive isotopes.

Abstract

The excitation of the isoscalar giant monopole resonance (ISGMR) in $^{116}$Sn and $^{208}$Pb has been investigated using small-angle (including $0^\circ$) inelastic scattering of 100 MeV/u deuteron and multipole-decomposition analysis (MDA). The extracted strength distributions agree well with those from inelastic scattering of 100 MeV/u $\alpha$ particles. These measurements establish deuteron inelastic scattering at E$_d \sim$ 100 MeV/u as a suitable probe for extraction of the ISGMR strength with MDA, making feasible the investigation of this resonance in radioactive isotopes in inverse kinematics.