Ngwetsheni, Cebo2021-08-312021-08-312019Ngwetsheni, C. and Orce, J., 2019. Combined analysis of the low-energy enhancement of the gamma-strength function and the giant dipole resonance. Hyperfine Interactions, 240(1).https://doi.org/10.1007/s10751-019-1618-3http://hdl.handle.net/10566/6561The nuclear dipole polarizability is mainly governed by the dynamics of the giant dipole resonance and has been investigated along with the effects of the low-energy enhancement of the photon strength function for nuclides in medium- and heavy-mass nuclei. Cubic-spline interpolations to both data sets show a significant reduction of the nuclear dipole polarizability for semi-magic and doubly magic nuclei, with magic numbers N = 28, 50, 82 and 126, which supports shell effects at high-excitation energies from the quasi-continuum to the giant dipole resonance. This work expands on the data analysis of our recent publication in Ngwetsheni and Orce (Phys. Lett. B 792, 335, 2019), which reveals a new spectroscopic probe to search for “old” and “new” magic numbers at high-excitation energies. New results presented in this work suggest an even higher sensitivity of the nuclear polarizability to shell effects when extrapolating the low-energy enhancement at lower gamma-ray energiesenNuclear dipole polarizabilityQuasi-continuumLow-energy enhancementPhoton-strength functionArticle