Soller slit using low density materials
AssigneeBede Scientific Instruments Limited
InventorsDavid Keith Bowen, Ladislav Pina, Adolf Inneman, Stephan Menzer
Life of this patent
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Abstract
A Soller slit device is provided for collimation of high energy radiation, such as X-ray or EUV radiation, and has a low angle of divergence (less than 0.1°) and a high transmission efficiency (60 to 80% or greater). The Soller slit is made up of multiple, parallel blades of low-density material, such as glass, mica, or the like, which can be treated to reduce reflectivity. The Soller slit device of the invention advantageously provides an increased peak intensity and decreased peak width in diffraction patterns produced in high energy diffractometry applications, such as X-ray diffractometry.
Claims21
A device for collimating high energy X-rays comprising:
- a plurality of substantially parallel planar blades that are stacked and spaced apart from one another to form a Soller slit having passages for the transmission of X-rays, said blades being constructed from glass sheets each having a thickness less than 250 μm and whose surfaces have a non-reflective treatment to absorb divergent X-rays that are not substantially parallel to said blades.
A system for performing high energy radiation diffractometry, comprising:
- a high energy X-ray source;
- a high energy radiation collimating device comprising a plurality of substantially parallel planar blades that are stacked and spaced apart from one another to form passages for the transmission of X-rays, said blades being constructed from glass sheets each having a thickness less than 250 μm and whose surfaces have a non-reflective treatment to absorb divergent X-rays from said source that are not substantially parallel to said blades;
- and
- a device for collecting X-ray radiation after the X-ray radiation impinges on a sample to be examined.
Dependencies are inferred from the claim text.