title: Unique phase recovery for nonperiodic objects.
abstract: 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.
authors.affiliation: School of Physics, The University of Melbourne, Victoria, 3010, Australia.
authors.forename: K A
authors.initials: KA
authors.lastname: Nugent
authors.forename: A G
authors.initials: AG
authors.lastname: Peele
authors.forename: H N
authors.initials: HN
authors.lastname: Chapman
authors.forename: A P
authors.initials: AP
authors.lastname: Mancuso
mesh_terms: D000465:Algorithms; D014961:X-Ray Diffraction / Q000379:methods*