Speaker
Mikhail Mazuritskiy
(Southern Federal University)
Description
Propagation of X-rays through microcapillaries is a phenomenon of great interest due to the high efficiency in the transport of the radiation by microcapillary holes and, as consequence, due to the possibility to design new optical elements suitable to shape an intense x-ray beam. Actually, because the technology based on the capillary optical elements can deliver a high flux density within a sub-micrometer spot.
We present here recent experimental data on the transmission of soft X-ray synchrotron radiation collected with different types of micro-channel plates (MCP). We have studied both spectral and angular distributions of MCPs having spatial regular holey channels with a hexagonal symmetry in the transverse cross-section.
To characterize the fine structures of the energy spectra and angular distributions of the fluorescence radiation at the exit of MCPs we have also measured the soft X-ray transmission at both Si-L and O-K edges.
Based on this large set of experimental data, theoretical calculations were performed to clarify the soft x-ray channeling phenomenon giving unique information on the wave propagation phenomenon. Indeed, both experimental and theoretical data point out the presence of propagation radiation modes in these glassy waveguides and the interference between incident and reflected (fluorescence) waves inside MCPs.
Author
Mikhail Mazuritskiy
(Southern Federal University)
Co-authors
Prof.
Alexander Lerer
(Southern Federal University, Rostov-on-Don, Russia)
Augusto Marcelli
(INFN/LNF)
Dr
Kasia Dziedzic-Kocurek
(M. Smoluchowski Institute of Physics, Jagiellonian University, Krakow, Poland)
Sultan Dabagov
(INFN)
