Wavelet signatures of K-splitting of the Isoscalar Giant Quadrupole Resonance in deformed nuclei from high-resolution ( p, p ') scattering off Nd-146,Nd-148,Nd-150
2018
Abstract
The phenomenon of fine structure of the Isoscalar Giant Quadrupole Resonance (ISGQR) has been studied with high energy-resolution proton inelastic scattering at iThemba LABS in the chain of stable even-mass Nd isotopes covering the transition from spherical to deformed ground states. A wavelet analysis of the background-subtracted spectra in the deformed Nd-146,Nd-148,Nd-150 isotopes reveals characteristic scales in correspondence with scales obtained from a Skyrme RPA calculation using the SVmas10 parameterization.
A semblance analysis shows that these scales arise from the energy shift between the main fragments of the K=0, 1 and K=2 components. (c) 2018 The Authors. Published by Elsevier B.V.