Backscattering of MeV Electrons. An Analysis of Tabata's Experiment with Geant4

TL;DR

This paper uses Geant4 simulations to verify Tabata's low-Z electron backscattering experiments, confirming their accuracy and challenging previous claims of experimental errors.

Contribution

It demonstrates the effectiveness of Geant4 in replicating low-Z electron backscattering experiments and clarifies the validity of Tabata's original results.

Findings

Good agreement between simulations and experiments

Invalidates previous claims of experimental errors

Highlights importance of physics list selection in simulations

Abstract

A series of simulations were conducted with Geant4 in order to verify the electron backscattering experiments performed by Tabata in the low Z elements of Be, C, and Al. In general, quite good agreement was obtained by carefully choosing the physics lists employed. These results invalidate the claim made before about the presence of experimental errors in the above work.