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Neutronen für die Analyse von Wasserstoff in Festkörpern
Author(s) -
Foest R.,
Schmidt M.,
Kruth A.,
Richter D.,
Schmidt S. M.
Publication year - 2018
Publication title -
vakuum in forschung und praxis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.213
H-Index - 13
eISSN - 1522-2454
pISSN - 0947-076X
DOI - 10.1002/vipr.201800682
Subject(s) - neutron reflectometry , hydrogen , neutron scattering , neutron diffraction , materials science , scattering , small angle neutron scattering , mesoscopic physics , neutron , hydrogen fuel , chemistry , physics , nuclear physics , diffraction , optics , condensed matter physics , organic chemistry
Summary Neutrons for the analysis of hydrogen in solids Recent advancement of renewable energy applications lead to increased focus in materials and surface science on hydrogen technologies. Neutron‐based analytical methods are wellsuited to detect structural sites and dynamics of hydrogen in solids. Because of its large incoherent scattering cross‐section, very small quantities of hydrogen are detectable. This article gives an overview over fundamental aspects of neutron methods and discusses some selected examples of analysis techniques. Results of structural investigations, for kinetics observed by quasielastic scattering as well as decomposition mechanisms investigated by non‐elastic scattering are shown for alanates, as important materials for hydrogen storage. Furthermore, small angle diffraction studies of the mesoscopic structure of polymer membranes and of electrodes for fuel cells are presented. Finally, observations of geometric changes in thin metal oxide layers due to incorporation of hydrogen by neutron reflectometry are described.