Partial-Wave Analysis of Inelastic Electron Scattering on the Collective Giant Resonances of Medium and Heavy Spherical Even Nuclei

Abstract

A partial-wave analysis of inelastic electron scattering on the giant (isospin) resonance is carried out for even medium and heavy spherical nuclei, taking into account the effects of finite energy loss. The giant resonance is treated collectively (Steinwedel-Jensen two-fluid model) by the dynamic coupling of the Goldhaber-Teller dipole mode to the collective quadrupole surface oscillations. The effects on the inelastic electron cross section due to the coupling of the surface phonons with their associated transition charge to the dipole modes are investigated. Since no experimental results are available yet, we calculate and discuss the electron scattering cross sections for several nuclei and compare them with the predictions of the pure dipole-mode model and the Born approximation. The nuclear parameters used are determined by fitting the photoabsorption cross section to experiment.