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Diffraction of neutrons by a vibrating quartz bar in the Laue case
Author(s) -
Michalec R.,
Chalupa B.,
Sedláková L.,
Mikula P.,
Petržílka V.,
Zelenka J.
Publication year - 1974
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s002188987401048x
Subject(s) - diffraction , neutron diffraction , bar (unit) , neutron , quartz , diffraction topography , wavelength , materials science , excited state , optics , crystal (programming language) , physics , x ray crystallography , atomic physics , nuclear physics , composite material , meteorology , computer science , programming language
In this paper the diffraction of neutrons by the lattice of a vibrating, piezoelectrically excited quartz bar is investigated. The dependence of the observed significant increase of the integrated intensity of diffracted neutrons, due to the vibrations of a single‐crystal, on the resonator current, on the bar thickness and on the wavelength of neutrons was studied. In the time spectrum of the diffracted neutrons the modulation components with both even and odd multiples of the resonance frequency of the quartz bar were observed. The experimental data are interpreted on the basis of the kinematical theory of neutron diffraction, using the `layer' structure of the vibrating single‐crystal.