Abstract

We present a simple solution to the Fresnel–Kirchoff diffraction integral that is appropriate for x-ray radiography of strongly absorbing and phase-shifting objects in the geometrical optics regime, where phase contrast enhancements can be considered to be caused by refraction by a semi-opaque object. We demonstrate its accuracy by comparison to brute-force numerical ray trace and diffraction calculations of a representative simulated object, and show excellent agreement for spatial scales corresponding to Fresnel numbers greater than unity. The result represents a significant improvement over approximate formulas typically used in analysis of refraction-enhanced radiographs, particularly for radiography of transient phenomena in objects that strongly refract and show significant absorption.

© 2013 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Refraction-enhanced backlit imaging of axially symmetric inertial confinement fusion plasmas

Jeffrey A. Koch, Otto L. Landen, Laurence J. Suter, Laurent P. Masse, Daniel S. Clark, James S. Ross, Andrew J. Mackinnon, Nathan B. Meezan, Cliff A. Thomas, and Yuan Ping
Appl. Opt. 52(15) 3538-3556 (2013)

Efficient, 1–100-keV x-ray radiography with high spatial and temporal resolution

D. K. Bradley, O. L. Landen, A. B. Bullock, S. G. Glendinning, and R. E. Turner
Opt. Lett. 27(2) 134-136 (2002)

Validation of radiographic simulation codes including x-ray phase effects for millimeter-size objects with micrometer structures

Harry E. Martz, Jr., Bernard J. Kozioziemski, Sean K. Lehman, Stefan Hau-Riege, Daniel J. Schneberk, and Anton Barty
J. Opt. Soc. Am. A 24(1) 169-178 (2007)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (2)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (11)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription