Coherent X-ray Fluorescent Excitation inside MCP Microchannels: Axial Channeling and Wave Propagation

Autor:	A. M. Lerer, Augusto Marcelli, M. I. Mazuritskiy, Sultan B. Dabagov
Rok vydání:	2021
Předmět:	Materials science Anomalous scattering Wave propagation Astrophysics::High Energy Astrophysical Phenomena X-ray Synchrotron radiation Radiation Fluorescence Molecular physics Surfaces Coatings and Films law.invention law Waveguide Excitation
Zdroj:	Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques. 15:513-519
ISSN:	1819-7094 1027-4510
DOI:	10.1134/s1027451021010286
Popis:	We have experimentally and theoretically characterised silicon-glass Micro-Channel Plate (MCP) devices doped with cobalt atoms. Under anomalous scattering condition near the SiL-edges and CoK-edge we have proved the coherent excitation and the axial propagation of the induced fluorescence radiation inside micro-channels. Chemical modification of the MCP inner surface shows the efficient transmission of hard X-ray secondary radiation at the primary radiation energies of ~100 eV and ~8 keV. Experimental tests for these X-ray waveguides have been performed utilising both synchrotron radiation and conventional X-ray sources. X-ray pattern simulations point out that the propagating radiation has a waveguide modal character, which is described as axial channeling of the secondary fluorescence radiation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::fc298fabedc0ec64b139a43ecc6d1be1 https://doi.org/10.1134/s1027451021010286 Zobrazit plný text záznamu Full text from SpringerLink