TL;DR
This paper re-derives the bremsstrahlung cross section using time ordered perturbative theory, revealing screening effects missed by the traditional Bethe-Heitler formula, and highlights the importance of screening parameters.
Contribution
It introduces a TOPT-based derivation of bremsstrahlung cross section that accounts for screening effects neglected in previous models.
Findings
TOPT provides a new perspective on bremsstrahlung cross section
Screening parameter significantly influences the cross section
Traditional Bethe-Heitler formula misses screening effects
Abstract
The bremsstrahlung cross section of electron in the atomic electric field is re-derived using the time ordered perturbative theory. The results are compared with the Bethe-Heitler formula. We indicate that both the TOPT-description and a soft version for the bremsstrahlung process predict a strong screening parameter-dependent cross section, which is missed by previous bremsstrahlung theory.
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Taxonomy
TopicsElectron and X-Ray Spectroscopy Techniques · Ion-surface interactions and analysis · Semiconductor materials and devices