Texture analysis from synchrotron diffraction images with the Rietveld method: dinosaur tendon and salmon scale.
J Synchrotron Radiat
; 12(Pt 3): 354-60, 2005 May.
Article
in En
| MEDLINE
| ID: mdl-15840922
ABSTRACT
A Rietveld method is described which extracts information on crystal structure, texture and microstructure directly from two-dimensional synchrotron diffraction images. This is advantageous over conventional texture analysis that relies on individual diffraction peaks, particularly for low-symmetry materials with many overlapping peaks and images with a poor peak-to-background ratio. The method is applied to two mineralized biological samples with hydroxylapatite fabrics an ossified pachycephalosaurid dinosaur tendon and an Atlantic salmon scale. Both are measured using monochromatic synchrotron X-rays. The dinosaur tendon has very strongly oriented crystals with c-axes parallel to the tendon direction. The salmon scale displays a weak texture.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Tendons
/
Durapatite
/
Crystallography, X-Ray
Limits:
Animals
Language:
En
Journal:
J Synchrotron Radiat
Journal subject:
RADIOLOGIA
Year:
2005
Document type:
Article
Affiliation country:
United States