As an appetizer...
 
 
The Bragg's law : The Reference Law to calculate the 2d spacing of the crystal according to your need of a wavelength(es) range.
 
 
 
Planck-Einstein equation: To convert the energy (keV) into its wavelength (A°).
 
 
 
Our optics work from a choice of 2d spacing cut from Germanium, Silicon or Quartz crystals.

Si, Ge and Quartz ingots

Crystal selection
AlpyX has selected Germanium, Silicon and Quartz recognized for the utmost quality of their crystal lattice, their high resistance to the X-ray flux, their mechanical properties for their shapping, as they totally fit with the wavelength range of other conventionnal crystals. 
 
Any other crystals (h,k,l) on request.

Way to :

ALPYX 

354 voie Magellan

Batiment Cleanspace

73800 Sainte-Hélène-du-Lac

FRANCE