After a brief review of the main areas of research in X-ray optics and an analysis of the development of capillary optics, a general theory of radiation propagation through capillary structures is described in both geometrical optics and wave optics approximations. Analysis of the radiation field structure inside a capillary waveguide shows that wave propagation in channels can be of a purely modal nature, with the transmitted energy mostly concentrated in the immediate neighborhood of the capillary inner walls. A qualitative change in radiation scattering with decreasing channel diameter — namely, the transition from surface channeling in microcapillaries to bulk channeling in nanocapillaries — is discussed.

PACS: 07.85.Fv, 41.50.+h, 42.25.−p (all) DOI: 10.1070/PU2003v046n10ABEH001639 URL: https://ufn.ru/en/articles/2003/10/b/ 000188974100002 Citation: Dabagov S B "Channeling of neutral particles in micro- and nanocapillaries" Phys. Usp. 46 1053–1075 (2003) BibTexBibNote ® (generic)BibNote ® (RIS)MedlineRefWorks Оригинал: Дабагов С Б «Каналирование нейтральных частиц в микро- и нанокапиллярах» УФН 173 1083–1106 (2003); DOI: 10.3367/UFNr.0173.200310b.1083