Spurious peaks arising from multiple scattering events involving the sample environment in inelastic neutron scattering

Autor:	Dmitry Reznik, Samrath L. Chaplot, Philippe Bourges, Thomas Wolf, Lothar Pintschovius, Jeffrey W. Lynn, Frank Weber, D. Parshall, Daniel Lamago, Ranjan Mittal, Rolf Heid
Rok vydání:	2014
Předmět:	Physics Scattering business.industry Neutron scattering Inelastic scattering Small-angle neutron scattering General Biochemistry Genetics and Molecular Biology Inelastic neutron scattering Computational physics Optics Neutron Biological small-angle scattering Wide-angle X-ray scattering business
Zdroj:	Journal of Applied Crystallography. 47:1472-1476
ISSN:	1600-5767
DOI:	10.1107/s1600576714010140
Popis:	Well defined peaks with energies of about 18 meV have been observed in a variety of inelastic neutron scattering experiments on both single crystals and powders, using either the triple-axis or the time-of-flight technique. They can easily be mistaken for signatures of real excitations. It has been found that they are due to multiple scattering events involving primarily the walls of the sample environment. Hence, they are particularly troublesome in experiments using very small samples, as have been used with recently developed high-intensity neutron spectrometers. Measures required to reduce the unwanted scattering to a minimum are also discussed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::90da44ca5a8ac1d5dc4cdcfee70bd82a https://doi.org/10.1107/s1600576714010140 Zobrazit plný text záznamu Plný text