Resonant enhancement of grazing incidence neutron scattering for the characterization of thin films
Artikel i vetenskaplig tidskrift, 2021

We use signal enhancement in a quantum resonator for the characterization of a thin layer of vanadium hydride using neutron reflectometry and demonstrate that pressure-concentration isotherms and expansion coefficients can be extracted from the measurement of totally externally reflected neutrons only. Moreover, a consistent data analysis of the attenuation cross section allows us to detect and quantify off-specular and small angle scattering. As our experiments are effective direct beam measurements, combined with resonant signal enhancement, counting times become considerably reduced. This allows us to overcome the challenges resulting from the comparatively low brilliance of neutron beams for grazing incidence scattering experiments. Further, we discuss the potential of resonant enhancement to increase any scattering, which is of particular interest for grazing incidence small angle neutron scattering and spectroscopy.

Författare

Adrien Perrichon

Uppsala universitet

STFC Rutherford Appleton Laboratory

Anton Devishvili

Uppsala universitet

Institut Laue-Langevin

Kristina Komander

Uppsala universitet

Gunnar K. Pálsson

Uppsala universitet

Alexei Vorobiev

Institut Laue-Langevin

Uppsala universitet

Rasmus Lavén

Chalmers, Kemi och kemiteknik, Energi och material, Oorganisk miljökemi 2

Maths Karlsson

Chalmers, Kemi och kemiteknik, Energi och material, Oorganisk miljökemi 2

M. Wolff

Uppsala universitet

Physical Review B

24699950 (ISSN) 24699969 (eISSN)

Vol. 103 23 235423

Yt/gränsskiktsdynamik undersökt med neutronspridning

Vetenskapsrådet (VR) (2016-06958), 2017-01-01 -- 2020-12-31.

Ämneskategorier

Acceleratorfysik och instrumentering

Atom- och molekylfysik och optik

Annan fysik

DOI

10.1103/PhysRevB.103.235423

Mer information

Senast uppdaterat

2021-07-01