Deformation effects in Giant Monopole Resonance
J. Kvasil, V.O. Nesterenko, A. Repko, D. Bozik, W. Kleinig, P.-G., Reinhard
TL;DR
This paper investigates how quadrupole deformation affects the giant monopole resonance in Samarium isotopes using Skyrme RPA, revealing broadening and splitting of the resonance due to deformation effects.
Contribution
It provides a detailed analysis of deformation effects on GMR in deformed nuclei using both exact and separable RPA methods.
Findings
GMR broadens with quadrupole deformation
Deformation causes GMR to develop a two-peak structure
Coupling with quadrupole resonance influences GMR shape
Abstract
The isoscalar giant monopole resonance (GMR) in Samarium isotopes (from spherical Sm to deformed Sm) is investigated within the Skyrme random-phase-approximation (RPA) for a variety of Skyrme forces. The exact RPA and its separable version (SRPA) are used for spherical and deformed nuclei, respectively. The quadrupole deformation is shown to yield two effects: the GMR broadens and attains a two-peak structure due to the coupling with the quadrupole giant resonance.
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