Multiple-Wave Diffraction in High Energy Resolution Back-Reflecting X-Ray Optics

Autor:	D. S. Coburn, Yong Q. Cai, Alessandro Cunsolo, Yuri P. Stetsko, Jeffrey W. Keister, C. N. Kodituwakku
Rok vydání:	2011
Předmět:	Diffraction Physics business.industry Physics::Optics General Physics and Astronomy Bragg's law X-ray optics Acousto-optics Fraunhofer diffraction Bragg plane symbols.namesake Optics symbols Diffraction topography business Electron backscatter diffraction
Zdroj:	Physical Review Letters. 107
ISSN:	1079-7114 0031-9007
DOI:	10.1103/physrevlett.107.155503
Popis:	We have studied the effects of multiple-wave diffraction in a novel optical scheme recently published by Shvyd'ko et al. utilizing Bragg diffraction of x rays in backscattering geometry from asymmetrically cut crystals for achieving energy resolutions beyond the intrinsic width of the Bragg reflection. By numerical simulations based on dynamic x-ray diffraction and by experimentation involving two-dimensional angular scans of the back-reflecting crystal, multiple-wave diffraction was found to contribute up to several tens percent loss of efficiency but can be avoided without degrading the energy resolution of the original scheme by careful choice of azimuthal orientation of the diffracting crystal surface and by tilting of the crystal perpendicular to the dispersion plane.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::436eb7a5d312336a5f862135f3aecc79 https://doi.org/10.1103/physrevlett.107.155503 Zobrazit plný text záznamu