For every individual crystal, the “collection area”, represented by the vector [Nz] is perpendicular to the vector [hkl], designating the orientation of the crystalline planes used for diffraction.
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CLAIRE contains a total of 576 crystals which are produced
produced by the Institut für Kristallzüchtung at Berlin. The
crystals will diffract 170 keV gamma-ray in Laue geometry.
For every individual crystal, the “collection area”, represented by the vector [Nz] is perpendicular to the vector [hkl], designating the orientation of the crystalline planes used for diffraction. |
| ring number | reflection plane
[hkl] |
number of crystals | crystal surface
WxH [mm x mm] |
crystal thickness
T [mm] |
Bragg angle
@ 170 keV |
| 1 | 111 | 28 | 10 x 10 | 3.0 | 0.66° |
| 2 | 220 | 52 | 10 x 10 | 3.2 | 1.08° |
| 3 | 311 | 56 | 10 x 10 | 4.6 | 1.27° |
| 4 | 400 | 72 | 10 x 10 | 4.2 | 1.52° |
| 5 | 331 | 80 | 10 x 7 | 5.1 | 1.67° |
| 6 | 422 | 88 | 10 x 10 | 5.0 | 1.87° |
| 7 | 333 | 96 | 10 x 7 | 6.2 | 1.99° |
| 8 | 440 | 104 | 10 x 10 | 5.6 | 2.17° |
For the calculation of the optimal crystal thickness at 170 keV (T),
a mosaic structure of 30“ has been assumed.