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

SOFT X-RAYS PRODUCED BY RELATIVISTIC ELECTRONS IN MULTILAYER STRUCTURES

18 Sept 2023, 17:17

1m

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

Speaker

Ekaterina Kidanova (Belgorod State University, Belgorod, Russia)

Description

Periodic structures as well as crystal structures can be used to generate tunable quasi-monochromatic X-rays. When a fast charged particle crosses a layered structure, various types of soft X-rays are produced, including parametric X-ray radiation (PXR) and diffracted transition radiation (DTR).
We present the results of an experimental study of the radiation generated in Co/C (period 5.10 nm) and Mo/B4C (period 2.24 nm) multilayer X-ray mirrors under the action of 7-MeV electrons. As a source of relativistic electrons, a microtron of the "Pakhra" accelerator complex of the Lebedev Physical Institute was used. X-ray spectra with energies from 240 to 480 eV were measured at observation angles of 90 and 120 degrees using an Amptek XR-100SDDfast silicon detector with an input window "C1". The experimental setup also made it possible to measure the orientation dependences of the x-ray yield. Our experimental data are in good agreement with the calculation results.
The work was supported by the grant from the President of the Russian Federation for young scientists-candidates of science MK-1320.2022.1.2.