A wide variety of different crystals for various wave lengths and diverse focal lengths is available or can be produced to customer specifications.
First, the crystal plates with the dimensions 20mm x 40mm x 0.5mm are smoothed at a predetermined angle τ to the lattice planes, and then machined and bent to a precisely calculated concave radius. The smoothing angle ensures that the primary side focus distance A, as measured from the centre of the tube to the centre of the crystal, is smaller than the secondary side focus distance B.
The series 615/616 units only differ in the B distances. Series 616 crystals are predominantly used when greater distances are required.
Guinier-Monochromator 611/615/616
Guinier-Monochromator 611/615/616
