EP0115892A1
Expired / Lapsed
EP
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X-ray examination apparatus having a double focusing crystal
Assignee: Koninklijke Philips NV
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Filing: 1984-02-01
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Granted: —
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Expires: 2004-02-01
Abstract
Abstract A double focusing monochromator crystal for an X-ray analysis apparatus is formed from a single crystal of silicon or germanium poor in dislocations, in which at a surface coinciding with one of the crystal surfaces of the crystal a cavity is provided. With the accurately finished opposite surface the crystal is preferably secured in a cavity of the jig by means of a glue compound or with the interposition of a metal layer by soldering. More particularly, the cavities are spherical and the ultimate radius of curvature of the crystal is distributed uniformly over the cavity in the crystal and the cavity in the jig.
Inventors
- 👤 Geert Brouwer
- 👤 Albert Huizing
- 👤 Antonius Adrianus Maria Ondersteijn
- 👤 Josef Franz Karol Thijssen
- 👤 Mathias Petrus Antonius Viegers
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 03:14
CPC Classifications
G; G01; G01N; G01N23/00; G01N23/20; G01N23/207
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
55 words
A double focusing X-ray analysis crystal for rnono-clromatization and focusing of X-ray radiation in an X-ray analysis apparatus, characterized in that the crystal (15) is a single crystal which is excavated on one side (21) and is arranged with an opposite accurately finished surface (19) in an accurately finished cavity (25) of a jig (23).
Claim 2
Dependent Claim
55 words
A double focusing X-ray analysis crystal for rnono-clromatization and focusing of X-ray radiation in an X-ray analysis apparatus, characterized in that the crystal (15) is a single crystal which is excavated on one side (21) and is arranged with an opposite accurately finished surface (19) in an accurately finished cavity (25) of a jig (23).
Claim 3
Dependent Claim
25 words
A double focusing crystal as claimed in Claim 1, characterized in that both the cavity in the crystal and that in the jig are spherical.
Claim 4
Dependent Claim
35 words
A double focusing crystal as claimed in Claim 1, characterized in that it is secured by means of a glue compound over at least substantially the whole relevant surface in a jig having glue-absorbing properties.
Claim 5
Dependent Claim
37 words
A double focusing X-ray analysis crystal as claimed in Claim 1, characterized in that it is secured in the jig with the interposition of a metal layer provided on the crystal and having an accurately defined thickness.
Claim 6
Dependent Claim
44 words
A double focusing crystal as claimed in Claim 2, 3 or 4, characterized in that the spherical cavity of the jig has a radius of curvature which is at least approximately equal to twice the radius of curvature of an excavated crystal secured therein.
Claim 7
Dependent Claim
41 words
A double focusing crystal as claimed in any one of the preceding Claims, characterized in that it is formed from a plane-parallel slice of silicon or germanium poor in dislocations, the parallel end faces of which coincide with (124) crystal surfaces.
Claim 8
Dependent Claim
43 words
A double focusing crystal as claimed in any one of the preceding Claims, characterized in that the opposite surface of the crystal is formed in such a manner that the excavated crystal arranged in the jig has at least substantially a homogeneous thickness.
Claim 9
Dependent Claim
27 words
An X-ray diffractometer, characterized in that it is provided with a monochromator comprising a double focusing analysis crystal as claimed in any one of the preceding Claims.
Claim 10
Dependent Claim
25 words
An X-ray spectrometer, characterized in that it is provided with a double focusing analysis crystal as claimed in any one of Claims 1 to 7.
Claim 11
Dependent Claim
31 words
An X-ray analysis apparatus for measuring macro-stresses in materials, characterized in that it is provided with a double focusing analysis crystal as claimed in any one of Claims 1 to 7.
References Cited (Backward Citations)
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