Extracting the information of scattering potential using angular distributions of rescattered photoelectrons

Rescattered photoelectrons are greatly affected by the binding potential of the parent core, while directly emitted photoelectrons not. They are of comparable probability amplitudes at the onset of the plateau in the kinetic energy spectra of photoelectrons, which leads to the photoelectron angular distributions varying distinctively with binding potential of the targets. We exhibit such variations and propose that the variations can be used to extract potential information of the target core.