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Phys Rev Lett. 2003 Nov 14;91(20):203902. Epub 2003 Nov 13.

Unique phase recovery for nonperiodic objects.

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  • 1School of Physics, The University of Melbourne, Victoria, 3010, Australia.


It is well known that the loss of phase information at detection means that a diffraction pattern may be consistent with a multitude of physically different structures. This Letter shows that it is possible to perform unique structural determination in the absence of a priori information using x-ray fields with phase curvature. We argue that significant phase curvature is already available using modern x-ray optics and we demonstrate an algorithm that allows the phase to be recovered uniquely and reliably.

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