Radiation from Relativistic Electrons in Periodic Structures "RREPS-23" & Electron, Positron, Neutron and X-ray Scattering under External Influences "Meghri-23"

Spectrum of Coherent VUV Radiation Generated by 5.7 MeV Electrons in the Periodic Structure of a Multilayer X-ray Mirror

18 Sept 2023, 17:25

1m

Poster Parametric X–ray Radiation, Channeling Radiation Poster session I

Speaker

Mikhail Shevelev

Description

Structures such as multilayer X-ray mirrors can be effective sources of vacuum ultraviolet and ultra-soft X-ray radiation with tunable radiation energy [1-3]. The emission band is determined by the period of the multilayer structure, the number of layers, and the tilt angle of the structure θ0 with respect to the direction of an electron beam. The main contribution to the radiation is made by the diffraction of transition radiation (DTR) and coherent radiation of the periodic structure of the target excited by an electron beam - an analog of parametric x-ray radiation in crystals (PXR). In this report, we show the calculation results of the angular and spectral properties of DTR and PXR generated by 5.7 MeV electrons in a structure consisting of 50 pairs of layers of molybdenum and silicon and consider approaches for extracting the contributions of DTR and PXR in the future experiment.
The work was supported by the Russian Science Foundation, grant No. 23-22-00187.

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