Splitting of ISGMR strength in the light-mass nucleus ²⁴Mg due to ground-state deformation

2015/07/13 by Yogesh Kumar Gupta, Y. K. Gupta, U. Garg +49
Physics and Astronomy · #FOS: Physical sciences #High-Energy Particle Collisions Research #Nuclear Experiment (nucl-ex) #Nuclear Theory (nucl-th) #Nuclear physics research studies #Quantum Chromodynamics and Particle Interactions #nucl-ex #nucl-th

paper · pdf · doi:10.48550/arxiv.1507.03639

5 pages, 4 figures; to be published in Phys. Lett. B

arxiv created 2015/07/13 · openalex publication_date 2015/07/13 · arxiv updated 2015/07/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

The isoscalar giant monopole resonance (ISGMR) strength distribution in ²⁴Mg has been determined from background-free inelastic scattering of 386-MeV α particles at extreme forward angles, including 0^∘. The ISGMR strength distribution has been observed for the first time to have a two-peak structure in a light-mass nucleus. This splitting of ISGMR strength is explained well by microscopic theory in terms of the prolate deformation of the ground state of ²⁴Mg.

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