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Diffraction contrast in X‐ray radiographic images of octahedrite meteorites
Author(s) -
Weiss W.,
Bunge H. J.
Publication year - 2001
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s0021889801009529
Subject(s) - optics , materials science , kamacite , x ray , radiography , meteorite , diffraction , wavelength , physics , astronomy , nuclear physics , chondrite
Slices of ∼12 mm thickness cut out of an octahedritic iron–nickel meteorite of the Gibeon shower were investigated by conventional X‐ray transmission radiography. When the direction of the incident X‐ray beam is parallel to one or two of the four habit planes of the kamacite lamellae, black–white contrast lines are observed in the radiographs. These lines are attributed to Bragg reflection, at lattice planes parallel to the lamellae planes, of a narrow band of wavelengths filtered out of the incident white spectrum by absorption in the sample.