Phase and Group Velocities of X-ray Waves in the Pores of Track Membranes

Abstrac Propagation of electromagnetic hard X-ray waves inside cylindrical pores in thin polyethylene terephthalate (PET) track membranes is studied. Numerical simulation shows that both the phase and group velocities of the waves are constant over a significant part of the through pore length. In t...

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Bibliographic Details
Published in:Bulletin of the Lebedev Physics Institute 2024-10, Vol.51 (Suppl 5), p.S416-S423
Main Authors: Mitrofanov, A. V., Feshchenko, R. M.
Format: Article
Language:English
Subjects:
Light Modulation
Physics
Physics and Astronomy
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Summary:Abstrac Propagation of electromagnetic hard X-ray waves inside cylindrical pores in thin polyethylene terephthalate (PET) track membranes is studied. Numerical simulation shows that both the phase and group velocities of the waves are constant over a significant part of the through pore length. In this case, the product of the phase and group velocities is equal to the square of the speed of light in vacuum. The paper analyzes the relationship between the established properties of wave velocities in pores and the properties of waveguide modes propagating in a hollow cylindrical waveguide with smooth walls. Possible applications of the observed phase properties of the pores for fabricating phase X-ray filters based on porous PET membranes are discussed.
ISSN:1068-3356
1934-838X
DOI:10.3103/S1068335624601468