X-Ray Guides
The simplest type of a capillary optics is the X-ray guide, a cylindrically shaped monocapillary. It collimates the X-ray beam and limits the divergence angle at the monocapillary exit to the critical angle of total reflection. In comparison to a pinhole an X-ray guide enhances the intensity on the sample surface considerably. X-ray guides are manufactured with different capillary diameters and capillary lengths in accordance with their application. Additionally they can be equipped by aligned pinholes.
X-Ray guide
Specification
X-Ray guiding system for XRD, µXRD, XRF and µXRF
| Source - entrance distance f1, mm | > 10 |
| Capillary diameter d1*, µm | 10 ... 1000 |
| Length l**, mm | 94, 135, 165, 173, 191, 210, 230 |
| Energy range, keV | 1 ... 30 |
| Optimal source size, mm | 0.02 ... 1.0 |
| Housing diameter dmax***, mm | 7, 10, 16 |
| Intensity gain | 3 ... 10 |
* Combination with exit pinhole possible
** other lengths on request
*** other housing diameters on request