ELD
Quantitative information from electron diffraction patterns
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ELD extracts full quantitative information from electron diffraction patterns, including single
crystal patterns, powder patterns and patterns from more or less oriented fibres.
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Easy to use, Productive, Fast
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ELD runs under the Windows operating system and makes full use of its intuitive and easy to use
user interface. ELD is designed to be easy to learn and easy to use, and gives productive results
within hours of its installation. Using advanced curve fitting techniques electron diffraction
intensities can be estimated to high precision.
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Key Features
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full quantification of diffraction patterns from
single crystals, from powders and from fibres
- measurement of d-values of reflections
- quantitative determination of electron diffraction
intensities and amplitudes
- combination of ED data with TEM imaging data
from CRISP
- automatic and manual lattice refinement
- many options for examining ED spots
- fully automatic or user steered processing
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The analysis of patterns from single crystals
includes
everything from d-spacings and crystal
symmetry
to full analysis of amplitudes/ intensities
and shapes of
electron diffraction spots. Electron
diffraction data
often extends to higher resolutions
than TEM images,
for inorganic specimens well
beyond 1 Å. ELD will
give full structural
information from over 1000
diffraction spots in
only a few minutes. ED data from
several
projections can be combined into a complete
3-dimensional data set, of quality comparable to
X-ray diffraction data.
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Diffraction patterns from powder rings can be used to calibrate the measurement of d-spacings
from other patterns, or can themselves be analysed in terms of the d-spacings of the rings, the
radial distribution function, and the width and intensity of the rings.
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Click here for full size image
(30.6KB)
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Diffraction arcs from fibres are treated as a special case of rings, where the ring does not occupy
360º. Again, d-spacings, widths and intensities are evaluated, both for the arc as a complete unit
and at a number of angular positions across the arc.
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© Copyright 2008, Calidris
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