Twisted-photons distribution emitted by relativistic electrons at axial channeling

Within the framework of quantum electrodynamics we have developed a theory for radiation of twisted photons by axially channeled electrons that allowed us for the first time to draw the angular distribution of twisted photons emitted by channeled electrons. [Display omitted] •The angular distributions of twisted photons emitted by channeled electrons have cylindrical symmetry.•The more TAM of twisted photons at the channeling the more pronounced the cylindrical symmetry.•At the channeling, the angular distributions of twisted photons with negative and positive TAM are identical.