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

@article{Davis1995PhasecontrastIO,
  title={Phase-contrast imaging of weakly absorbing materials using hard X-rays},
  author={Timothy J. Davis and Da Chao Gao and Timur E Gureyev and Andrew W. Stevenson and Stephen W. Wilkins},
  journal={Nature},
  year={1995},
  volume={373},
  pages={595-598}
}
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… 

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This t'e_r_t was prepared as an account of work sponsored by an agency of the United States : Government. Neither the United States Government nor any agency th,_reof, nor any of their *i empl.oyees