Three-dimensional visualization of the inner structure of single crystals by step-scanning white X-ray section topography.
Visualization of the three-dimensional distribution of the crystal defects of large single crystals of calcium fluoride has been demonstrated by white X-ray section topography using sheet-like X-rays (BL28B2 at SPring-8). An image of the three-dimensional distribution of the crystal defects was reconstructed by stacking section topographs, which expressed the images of cross sections of the sample. The section topographs were recorded using a CMOS flat-panel imager or a CCD detector combined with scintillator (Gd(2)O(2)S:Tb) and relay lens system. The section topographs were measured by repeating cycles of exposure and sample translation along the direction perpendicular to the top face of the sample. Using high-brilliance and high-energy white X-rays ( approximately 60 keV) efficiently, visualization of the three-dimensional structure of subgrains of a sample of up to 60 mm in diameter was achieved. Furthermore, the three-dimensional distribution of the glide plane in the crystal was visualized by reconstructing the linear contrast of the glide plane.
Mukaide
Taihei
T
Canon Research Center, CANON Inc., Japan. taihei.mukaide@canon.ac.jp
Kajiwara
Kentaro
K
Noma
Takashi
T
Takada
Kazuhiro
K
D002124:Calcium Fluoride / Q000737:chemistry*; D018360:Crystallography, X-Ray / Q000379:methods*; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D021621:Imaging, Three-Dimensional; D008968:Molecular Conformation; D041622:Tomography, Optical / Q000379:methods*
D002124:Calcium Fluoride