Phase-contrast imaging of weakly absorbing materials using hard X-rays

  title={Phase-contrast imaging of weakly absorbing materials using hard X-rays},
  author={T. Davis and D. Gao and T. Gureyev and A. Stevenson and S. Wilkins},
IMAGING with hard X-rays is an important diagnostic tool in medicine, biology and materials science. Contact radiography and tomography using hard X-rays provide information on internal structures that cannot be obtained using other non-destructive methods. The image contrast results from variations in the X-ray absorption arising from density differences and variations in composition and thickness of the object. But although X-rays penetrate deeply into carbon-based compounds, such as soft… Expand
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Handbook on synchrotron radiation
Preface. 1. Synchrotron X-ray scattering studies of Langmuir films (J. Als-Nielsen and H. Mowald). 2. Coronary angiography project at the Photon Factory using a large monochromatic beam (K. Hyodo, K.Expand
Bragg reflection x ray optics
After a brief summary of the properties of x rays and of materials in the x ray frequency range, the ray optics and microscopic wavefield optics of Bragg reflection in perfect crystals are reviewed.Expand
Advanced X-ray scattering techniques for the characterization of semiconducting materials
Abstract The application of high resolution X-ray scattering to the characterization of single crystal semiconductors is reviewed. Double and triple axis diffraction are discussed and the presentExpand
Dynamical theory of X‐ray diffraction in crystals with defects
Sets of integral equations are obtained that describe the X-ray diffraction in defective crystals. A simple description of defects is suggested both for weakly and strongly distorted regions. In theExpand
X-ray Bragg reflexion from perfect crystals – dependence on geometrical factors with particular regard to the zero-level-of-interaction limit
  • S. Wilkins
  • Mathematics
  • Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences
  • 1978
The variation of X-ray Bragg reflexion properties of centro-symmetric perfect crystals (both absorbing and non-absorbing) with thickness and degree of asymmetry of the reflexion is exploredExpand
A unified treatment of small‐angle X‐ray scattering, X‐ray refraction and absorption using the Rytov approximation
The Helmholtz wave equation for X-rays in a dielectric medium is solved using the Rytov approximation for the X-ray phase perturbation. It is shown that under appropriate limits the solution yieldsExpand
Pendellösung Fringes of X-Rays in Bragg Case
The dynamical theory of electron and X-rays for a deformed crystal reported by Takagi is applied to the Bragg case. The transmitted and diffracted waves are represented by the same integral forms asExpand
Use of Asymmetric Dynamical Diffraction of X-rays for Multiple-Crystal Arrangements of the (n1, +n2)Setting
Asymmetric dynamical diffractions of X-rays are successively used for multiple crystals arranged in the (n1 , +n2) setting. Double successive asymetric diffractions of the (n1 , +n2) arrangement giveExpand
Application de la théorie dynamique de S. Tagaki au contraste d'un défaut plan en topographie par rayons X. I. Faute d'empilement
Tagaki's dynamical theory of X-ray diffraction by a perfect crystal is described for the two cases of an incident plane-wave and a spherical wave. Emphasis is put on the relation between these twoExpand