Sampling statistics of diffraction from nanoparticle powder aggregates

Autor:	Hanfei Yan, John Hill, Ismail C. Noyan, Hande Öztürk
Rok vydání:	2014
Předmět:	Diffraction Materials science Condensed matter physics business.industry Scattering Bragg's law Nanoparticle General Biochemistry Genetics and Molecular Biology symbols.namesake Optics Debye–Hückel equation symbols Crystallite business Powder diffraction
Zdroj:	Journal of Applied Crystallography. 47:1016-1025
ISSN:	1600-5767
Popis:	In this study, the sampling statistics of X-ray diffraction data obtained from polycrystalline nanopowders are studied through analytical formulations and numerical modelling. It is shown that the very large acceptance angles of crystalline nanoparticles can cause issues in computing the number of diffracting grains scattering into a given Bragg reflection. These results intimate that formulations previously tested and verified for polycrystalline aggregates with grains larger than 500 nm should be revalidated for particles with coherent scattering lengths below 10 nm.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::29ab359424cd58e9c5cbfaf76959471a https://doi.org/10.1107/s1600576714008528 Zobrazit plný text záznamu Plný text