发明授权
US09291583B2 Trace element X-ray flourescence analyser using dual focusing X-ray monochromators 有权
微量元素X射线荧光分析仪采用双重聚焦X射线单色仪

Trace element X-ray flourescence analyser using dual focusing X-ray monochromators
摘要:
An X-ray fluorescence analyzer is provided which comprises: (1) an X-ray source selected to produce an intense X-ray beam, (2) a first optical element that focuses the X-ray beam produced by the X-ray source onto a sample and selects X-rays of a desired energy, (3) an energy resolving detector, and (4) a second optical element that receives fluorescent X-rays emitted from elements in the sample and focuses a selected energy range of said fluorescent X-rays onto said energy resolving detector. Each of the first and second optical elements includes a crystal component. The X-ray fluorescence analyzer is configured such that: (i) the X-ray source has a spot size dimensioned so that it is substantially in a field of view of the first optical element, and (ii) the first optical element focuses the X-ray beam emitted by the X-ray source onto an area of the sample that corresponds to a field-of-view of the second optical element. Furthermore, the field of view for an optical element is defined as the area in the source plane of the respective crystal component over which X-rays are able to be emitted and still efficiently be reflected by said optical element.
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