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Phasing Two-Dimensional Crystal Diffraction Pattern with Iterative Projection Algorithms


Abstract Phase problem has been long-standing in x-ray diffractive imaging. It is originated from the fact that only the amplitude of the scattered wave can be recorded by the detector, losing the phase information. The measurement of amplitude alone is insufficient to solve the structure. Therefore, phase retrieval is essential to structure determination with X-ray diffractive imaging. So far, many experimental as well as algorithmic approaches have been developed to address the phase problem. The experimental phasing methods, such as MAD, SAD etc, exploit the phase relation in vector space. They usually demand a lot of efforts to prepare the samples and require much more data. On the other hand, iterative phasing algorithms make use of the prior k... (more)
Created Date 2016
Contributor Zhao, Yun (Author) / Spence, John C.H. (Advisor) / Schmidt, Kevin (Committee member) / Weierstall, Uwe (Committee member) / Kirian, Richard (Committee member) / Zatsepin, Nadia (Committee member) / Arizona State University (Publisher)
Subject Biophysics / diffractive imaging / EMC algorithm / phase problem / two-dimensional crystal / x-ray crystallography / X-ray free electron laser
Type Doctoral Dissertation
Extent 108 pages
Language English
Copyright
Reuse Permissions All Rights Reserved
Note Doctoral Dissertation Physics 2016
Collaborating Institutions Graduate College / ASU Library
Additional Formats MODS / OAI Dublin Core / RIS


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Description Dissertation/Thesis