Measurement of the isoscalar giant monopole resonance in $^{86}$Kr via deuteron inelastic scattering using an active target CAT-M

TL;DR

This study measures the isoscalar giant monopole resonance in $^{86}$Kr using deuteron inelastic scattering with an active target, providing insights into nuclear matter incompressibility and its isospin dependence.

Contribution

It presents the first measurement of the ISGMR in $^{86}$Kr using an active target in inverse kinematics, advancing the understanding of nuclear incompressibility.

Findings

ISGMR energy determined to be 17 ± 1 MeV

Extracted isoscalar monopole strength distribution

Discussed nuclear incompressibility and isospin dependence

Abstract

Deuteron inelastic scattering on $^{86}$Kr was measured in inverse kinematics with the gaseous active target CAT-M, as part of a systematic investigation aimed at determining the nuclear matter incompressibility. The isoscalar monopole strength distribution was extracted via multipole decomposition analysis, and the energy of the isoscalar giant monopole resonance was determined to be 17 $\pm$ 1 MeV. The nuclear incompressibility of $^{86}$Kr and the isospin-dependent term of the nuclear matter incompressibility are discussed.