Bremsstrahlung from twisted electrons in the field of heavy nuclei

TL;DR

This paper provides a comprehensive relativistic analysis of bremsstrahlung emitted by twisted electrons in strong nuclear fields, revealing how electron twist affects photon emission properties in high-Z atom interactions.

Contribution

It introduces a fully relativistic, all-orders calculation of bremsstrahlung from twisted electrons in heavy nuclei fields, highlighting effects of electron twist on emission characteristics.

Findings

Twisted electrons significantly influence the angular distribution of emitted photons.

The polarization degree of bremsstrahlung photons depends on the electron's kinematic parameters.

Strong nuclear fields amplify the effects of electron twist on bremsstrahlung properties.

Abstract

We present a fully relativistic calculation of the bremsstrahlung emitted by twisted electrons propagating in the field of bare heavy nuclei. The electron-nucleus interaction is accounted for to all orders in the nuclear binding strength parameter $\alpha Z$, thus allowing us to investigate the bremsstrahlung in a strong field, where the effects of the "twistedness" are expected to be most pronounced. To explore these effects, we study the angular and polarization properties of the photons emitted in course of the inelastic twisted electrons scattering by the gold target. The influence of the kinematic parameters of the incident electrons on the double-differential cross section and the degree of the linear polarization is also discussed.