The Darwin theory for scattering by an ideal crystal in the asymmetric case
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It has been shown that there was an error in the equations of  for the asymmetric Laue case. The corrected equations are given.
The systems of recurrence equations are converted to systems of homogeneous differential equations to simplify the solution.
If negative angles are taken into consideration, we can combine systems (7) and (12), as in the Ewald theory. Then system (12) describes both Laue geometry and Bragg geometry in the most general configuration.
KeywordsDifferential Equation Recurrence Equation Corrected Equation Asymmetric Case General Configuration
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