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Double Focusing Device for HOPG, Cu or Ge Crystals

Double Focusing Device for HOPG, Cu or Ge Crystals
If ‘a’ is the distance from a radiation source to the monochromator and ‘b’ the distance from the monochromator to the image of the source, then :
The equations show that different vertical and horizontal radius are needed to fulfil to focusing conditions in the two directions.

for 35 HOPG crystals
Crystal dimensions : H 22 x W 28 x T 2mm
Crystal surface : H 166 x W 144mm

for 63 HOPG crystals
Crystal dimensions : H 22 x W 28 x T 2mm
Crystal surface : H 214 x W 202mm

for 81 HOPG crystals
Crystal dimensions : H 22 x W 25 x T 2mm
Crystal surface : H 210 x W 233mm

for 121 HOPG crystals
Crystal dimensions : H 22 x W 20 x T 2mm
Crystal surface : H 252 x W 230mm
POSITECHNICS® SAS - Artiparc - 9, rue Marcel Chabloz - F-38400 Saint Martin d'Hères - France
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