Properties of Ewald and Darwin curves

Both Ewald and
Darwin curves
have a horizontal plateau with a total width .
The FWHM, the convolution factors and the integrated intensity of both curves in units of are given by:
Ewald curve  Darwin curve  
FWHM  
Convolution factor f  
Integrated intensity 
The convolution factor f is defined here by the FWHM of the respective curve convoluted with itself. For the sake of simplicity we have neglected these factors in the the description of the theory.
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