Neutron holography of metal-hydrogen systems

Author(s): Laszlo Cser, Gerhard Krexner, Markus Prem, Ivan Sharkov, Gyula Török
Abstract: Neutron holography constitutes a novel technique to obtain structural information on an atomic scale. It is based on the recording of the interference pattern of neutron waves coherently scattered by atomic nuclei located on a crystal lattice with an appropriate reference wave. The technique is particularly well suited to obtain holograms of metal-hydrogen systems. In one approach, a point-like source of spherical neutron waves is realized inside a single-crystalline sample by making use of the large incoherent neutron scattering cross section of hydrogen nuclei, i.e. protons. Alternatively, strongly neutron-absorbing nuclei can be used as point-like detectors within a sample. Various features of the method are explained referring to a recent holographic reconstruction of the positions of the metal atoms around hydrogen on octahedral interstitial sites in a palladium-hydrogen single crystal. Further, the potential of the method for the investigation of metal-hydrogen systems, in general, is discussed. Œ 2005 Elsevier B.V. All rights reserved.
Organisation(s): Department of Mineralogy and Crystallography
External organisation(s): Hungarian Academy of Sciences, Central Research Institute for Physics, Saint Petersburg State University
Journal: Journal of Alloys and Compounds
Volume: 404-406
Pages: 122-125
No. of pages: 4
ISSN: 0925-8388
DOI: https://doi.org/10.1016/j.jallcom.2005.03.110
Publication date: 2005
Peer reviewed: Yes
Austrian Fields of Science 2012: 103009 Solid state physics, 103008 Experimental physics, 103034 Particle physics
Portal url: https://ucrisportal.univie.ac.at/en/publications/0c5032de-3831-4d1b-bc71-361853ca72ff

Back