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Collimating Monochromator
Collimating Monochromator
generation of a 1- or 2-dimensional
parallel beam
Special features
- Two parallel beam optics, aligned on the same focal point
- Acceptance of parallel X-radiation emitted by a point focus X-ray source
(e.g. 0.3 mm x 0.3 mm rotating Mo anode) - Generation of monochromatic (Ka1,2)
parallel spot - Beam divergence in dispersion direction
Df < 0.03° - Divergence perpendicular to the dispersion direction Df < 0.1°, tunable by means of slits
Beam path and main parameters of a collimating monochromator
Application: Powder Diffractometry
Sample: Si-powder (capillary)
Si (220) reflex, separation of Ka1 (left) and Ka2 (right)
Resolution (Divergence) in dispersion direction of the multilayer optics (A) and by slits (B)