Resonant enhancement of grazing incidence neutron scattering for the characterization of thin films
Journal article, 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.

Author

Adrien Perrichon

Uppsala University

STFC Rutherford Appleton Laboratory

Anton Devishvili

Uppsala University

Institut Laue-Langevin

Kristina Komander

Uppsala University

Gunnar K. Pálsson

Uppsala University

Alexei Vorobiev

Institut Laue-Langevin

Uppsala University

Rasmus Lavén

Chalmers, Chemistry and Chemical Engineering, Energy and Material, Environmental Inorganic Chemistry 2

Maths Karlsson

Chalmers, Chemistry and Chemical Engineering, Energy and Material, Environmental Inorganic Chemistry 2

M. Wolff

Uppsala University

Physical Review B

24699950 (ISSN) 24699969 (eISSN)

Vol. 103 23 235423

Surface/interface dynamics investigated with neutron scattering

Swedish Research Council (VR) (2016-06958), 2017-01-01 -- 2020-12-31.

Subject Categories

Accelerator Physics and Instrumentation

Atom and Molecular Physics and Optics

Other Physics Topics

DOI

10.1103/PhysRevB.103.235423

More information

Latest update

7/1/2021 1