Skip to main content
Log in

Regimes of X-ray phase-contrast imaging with perfect crystals

  • Published:
Il Nuovo Cimento D

Summary

Perfect crystals have recently been used as X-ray wavefront analysers to help produce phase-contrast images of non-periodic objects. Such images are essentially the maps of the phase gradients introduced in a plane X-ray wave upon passage through a weakly absorbing object. We show that the nature of the contrast in the images is determined by the ratio between the local wavefront curvature and the width of the crystal rocking curve. Depending on this ratio being small or large, two quite distinct regimes for image formation can be identified, namely the differential phase-contrast mode and the refractometric mode. We derive simple analytical formulae which can be used for the analysis of X-ray images of phase objects obtained in these two regimes.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. Bonse U. andHart M.,Appl. Phys. Lett.,6 (1965) 155;Z. Phys.,188 (1965) 154;Acta Crystallogr. A,24 (1968) 240.

    Article  ADS  Google Scholar 

  2. Ando M. andHosoya S.,Proc. VI Int. Conf. on X-ray Optics and Microanalysis, edited byG. Shinoda et al. (University of Tokyo Press, Tokyo) 1972, p. 63.

    Google Scholar 

  3. Momose A.,Nucl. Instrum. Methods Phys. Res. A,352 (1995) 622.

    Article  ADS  Google Scholar 

  4. Forster E., Goetz K. andZaumseil P.,Krist. Tech.,15 (1980) 937.

    Article  Google Scholar 

  5. Somenkov V. A., Tkalich A. K. andShilstein S. S.,J. Tech. Phys.,61 (1991) 197.

    Google Scholar 

  6. Belyaevskaya E. A., Efanov V. P. andIngal V., Russian patent No. 2012872 (1991).

  7. Ingal V. andBelyaevskaya E. A.,J. Phys. D,28 (1995) 2314.

    Article  ADS  Google Scholar 

  8. Davis T. J., Gao D., Gureyev T. E., Stevenson A. W. andWilkins S. W.,Nature,373 (1995) 595;Phys. Rev. Lett.,74 (1995) 3173.

    Article  ADS  Google Scholar 

  9. Takagi S.,J. Phys. Soc. Jpn,26 (1969) 1239.

    Article  ADS  Google Scholar 

  10. Afanas’ev A. M. andKohn V. G.,Acta Crystallogr. A,27 (1971) 421.

    Article  ADS  Google Scholar 

  11. Davis T. J.,J. X-ray Sci. Tech.,6 (1996) 317.

    Article  Google Scholar 

  12. Wilkins S. W.,Aust. Pat. Applicn., PCT/Au94/00480 (1993).

  13. Born M. andWolf E.,Principles of Optics (Pergamon, Oxford) 1980.

    Google Scholar 

  14. Davis T. J. andStevenson A. W.,J. Opt. Soc. Am. A,13 (1996) 1193.

    Article  ADS  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Rights and permissions

Reprints and permissions

About this article

Cite this article

Gureyev, T.E., Wilkins, S.W. Regimes of X-ray phase-contrast imaging with perfect crystals. Nouv Cim D 19, 545–552 (1997). https://doi.org/10.1007/BF03041015

Download citation

  • Received:

  • Accepted:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF03041015

PACS

PACS

Navigation