Advancing data analysis for reflectivity measurements of holographic nanocomposite gratings

6th European Conference on Neutron Scattering

Klepp, Jürgen^1 ; Pruner, Christian^2 ; Tomita, Yasuo^3 ; Geltenbort, Peter^4 ; Kohlbrecher, Joachim^5 ; Fally, Martin^1

Faculty of Physics, University of Vienna, Boltzmanngasse 5, Vienna

A-1090, Austria^1

Department of Materials Science and Physics, University of Salzburg, Hellbrunnerstrasse 34, Salzburg

A-5020, Austria^2

Department of Engineering Science, University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo

182-8585, Japan^3

Institut Laue-Langevin, 71 Avenue des Martyrs, Grenoble

38000, France^4

Laboratory for Neutron Scattering, Paul Scherrer Institut, Villigen PSI

5232, Switzerland^5

关键词: Grating depths;    Incident wavelength;    Nonuniformity;    Polymer composite;    Reflectivity measurements;    Refractive index profiles;    Rocking curves;    Very cold neutrons;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/746/1/012022/pdf
DOI  :  10.1088/1742-6596/746/1/012022

来源: IOP

【 摘 要 】

We discuss the analysis of neutron rocking curves measured with holographic nanoparticle-polymer composite gratings with SANS instruments and at very-cold neutron beamlines. In particular, the effects of broad incident wavelength-distributions and of nonuniformity of the refractive-index profile along the grating depth are assessed.