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Method for phase retrieval to reduce a sampling requirement when imaging a dynamic process (IN-15-146)

New method to increase time resolution in converting images to real space during dynamic processes, e.g., in Bragg coherent x-ray diffractive imaging experiments
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US Patent 10,079,305
  • Method for phase retrieval to reduce a sampling requirement when imaging a dynamic process (IN-15-146)

A method for retrieving phase information in a coherent diffraction imaging process includes acquiring a plurality of 3D data sets, each 3D data set corresponding to one of a plurality of time states, and reconstructing a 3D image of the object at a given time state using the 3D data set from all of the time states. Each 3D data set is acquired by: illuminating an object positioned in a first position with a coherent beam; measuring a first 2D diffraction pattern using an area detector; rotating the object around a tilt axis thereof to a second position that is different from the first position; re-illuminating the object positioned in the second position with the coherent beam; re-measuring a second 2D diffraction pattern using the area detector; and repeating the rotating, re-illuminating and re-measuring steps such that each 3D data set includes a predetermined number of diffraction patterns.