X-ray or gamma ray systems or devices – Specific application – Diffraction – reflection – or scattering analysis
Patent
1987-02-20
1989-08-29
Howell, Janice A.
X-ray or gamma ray systems or devices
Specific application
Diffraction, reflection, or scattering analysis
378 79, 378 76, 378 73, 378 71, G01N 2320
Patent
active
048624888
ABSTRACT:
Device for measuring the orientation of bulk monocrystalline materials with respect to the crystallographic parameters using the Laue method, consisting, on the one hand, of a Laue chamber including a polychromatic x-ray source, a photographic film support and a collimator placed in the path of the x-rays between the source and the film in the vicinity of the latter defining the optical axis of the Laue chamber, and consisting, on the other hand, of means of support for a bulk specimen, of means of alignment for the chamber and the means of support, and means of determining the orientation of the specimen with respect to the crystallographic axes, characterized in that the means of support comprise at least one specimen-carrier which has a first planar face to receive the specimen, a second planar space perpendicular to the first for immobilizing the specimen, a first reference plane parallel to the first planar face, a second reference face parallel to the second planar face and a third reference plane perpendicular to both the first and the second planar faces, in that the means of alignment consist of an optical bench having at least two planar reference faces which are parallel to the optical axis of the Laue chamber, and in that the means of support and the means of alignment interact to provide the means for determining the orientation of the specimen, because, during the measurement, the first and the second reference planes of the optical bench support the combination chosen from the first and the second, or alternatively the first and the third, reference planes of the specimen-carrier.
REFERENCES:
patent: 2904688 (1959-09-01), Miller
patent: 3078559 (1963-02-01), Thomas
patent: 3566112 (1971-02-01), Luecke
patent: 3631239 (1971-12-01), Krieder
patent: 4217493 (1980-08-01), Li et al.
patent: 4228578 (1980-10-01), Lin et al.
patent: 4547958 (1985-10-01), Hufford
patent: 4710259 (1987-12-01), Howe et al.
patent: 4788702 (1988-11-01), Howe et al.
Freeman John C.
Howell Janice A.
Miller Paul R.
U.S. Philips Corporation
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