Guinier-Monochromator 611/615/616

The Gunier-Monochromator 611 has a mount for focusing monochromator crystals of the Johansson-Guinier type. The crystals are mounted in a U-shaped metal frame and can thus be easily inserted and exchanged.

The functional housing enables all positioning degrees of freedom that are necessary for the fine adjustment of the crystal in the beam path of the X-ray tube.

Various apertures are included for the precise limitation of the X-ray beam cross-section.

The monochromator is primarily used on the line side of fine focus X-ray tubes (0.4mm x 8mm). The2 -line of the primary radiation is supressed completely.

Other optional distances for A and B can be quoted upon request. Please, specify Anode, A and B.

Crystals

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.

Parameters HUBER Guinier-Monochromator crystal 615/616:

Nr. Anode Kα1 [Å] Cryst. hkl 2θ [°] A [mm] B [mm] α [°] β [°]
                   
615002 Cu 1.54060 Ge 111 13.640 120 220 9.558 17.723
615004 Cr 2.28962 Ge 111 20.517 120 220 14.236 26.798
615006 Fe 1.93597 Ge 111 17.238 120 220 12.024 22.453
615008 Co 1.78892 Ge 111 15.893 120 220 11.106 20.680
615010 Mo 0.70926 Ge 220 10.212 120 220 7.179 13.245
615012 Ag 0.55936 Ge 220 8.038 120 220 5.659 10.416
                   
616002 Cu 1.54060 Ge 111 13.640 120 360 6.722 20.559
616004 Cr 2.28962 Ge 111 20.517 120 360 9.919 31.115
616006 Fe 1.93597 Ge 111 17.238 120 360 8.420 26.057
616008 Co 1.78892 Ge 111 15.893 120 360 7.791 23.995
616010 Mo 0.70926 Ge 220 10.212 120 360 5.065 15.359
616012 Ag 0.55936 Ge 220 8.038 120 360 3.999 12.076

1-wave lengths according to the International Tables for Crystallography, Vol. C, 177ff (1995)
Manufacturing tolerances +/- 3%

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