Comparison of elastic electron or positron scattering from proton-rich nuclei

TL;DR

This paper compares elastic electron and positron scattering cross sections from various nuclei, highlighting how extended charge densities influence scattering outcomes and charge form factors.

Contribution

It introduces a detailed comparison of scattering from multiple nuclei using relativistic models and examines the effects of extended charge densities.

Findings

Extended charge densities significantly affect scattering cross sections.

Charge form factors are sensitive to nuclear charge distribution.

Results agree with available experimental data.

Abstract

We investigate the cross sections of the elastic electron or positron scattering from $^{208}$Pb, $^{12}$C, $^{12,16}$O and $^{28, 32}$S by the relativistic partial-wave expansion method using the static charge density distribution from the self-consistent relativistic mean field model and also calculate the charge form factor for $^{12, 16}$O and $^{28, 32}$S. The numerical results are compared with the available data. Calculations indicate that the extended charge density distributions of $^{12}$O and $^{28}$S have observable effects on the cross sections of the electron or positron scattering as well as the charge form factors.