Electronic Resource
[S.l.]
:
International Union of Crystallography (IUCr)
Acta crystallographica
41 (1985), S. 128-133
ISSN:
1600-5724
Source:
Crystallography Journals Online : IUCR Backfile Archive 1948-2001
Topics:
Chemistry and Pharmacology
,
Geosciences
,
Physics
Notes:
The multiple diffraction of X-rays and neutrons is discussed on the basis of the kinematical theory; a program for the simulation of ψ scanning and λ scanning is developed, where the influence of the wavelength width of incident beams on the Ewald construction is properly taken into account. The effect of higher-order diffraction (n-beam interaction, n 〉 3) is treated as the sum of those of (n-2) pairs of relevant double diffractions (three-beam interactions). Applications are made for some examples for which experimental data are available; it is shown that the results are in very good agreement with experiment. This suggests that the kinematical approach is appropriate. The simulation is useful in planning ψ-scanning experiments for precise structure determination and for examining experimental data.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1107/S0108767385000265
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