Polycapillary collimating optics convert a highly divergent beam of X-rays into a quasi-parallel beam of low divergence. These optics are mainly used in X-ray diffraction (XRD) and wavelength dispersive spectrometry (WDS) applications.
Characteristics of Polycapillary Collimating Optics:
|Type||Parallel Beam, Polychromatic|
|Useful X-ray Energy Range||Typically 0.1 – 30 keV|
|Transmission Efficiency||Up to 40% (depending on optic design and X-ray energy)|
|Collection Solid Angle||Up to 20 degrees|
|Beam size||Typically 0.5 – 20 mm|
|Output Divergence||1 – 4 mrad (Depending on X-ray energy)Typically 2 mrad @ Mo K??, 3.5 mrad @ Cu K??|