dorsal/arxiv
View SchemaPhase Aberrations in Diffraction Microscopy
| Authors | S. Marchesini, H. N. Chapman, A. Barty, C. Cui, M. R. Howells, J. C. H. Spence, U. Weierstall, A. M. Minor |
|---|---|
| Categories | |
| ArXiv ID | physics/0510033 |
| URL | https://arxiv.org/abs/physics/0510033 |
| Journal | IPAP Conf. Series 7 pp.380-382, 2006 |
Abstract
In coherent X-ray diffraction microscopy the diffraction pattern generated by a sample illuminated with coherent x-rays is recorded, and a computer algorithm recovers the unmeasured phases to synthesize an image. By avoiding the use of a lens the resolution is limited, in principle, only by the largest scattering angles recorded. However, the imaging task is shifted from the experiment to the computer, and the algorithm's ability to recover meaningful images in the presence of noise and limited prior knowledge may produce aberrations in the reconstructed image. We analyze the low order aberrations produced by our phase retrieval algorithms. We present two methods to improve the accuracy and stability of reconstructions.
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"abstract": "In coherent X-ray diffraction microscopy the diffraction pattern generated by\na sample illuminated with coherent x-rays is recorded, and a computer algorithm\nrecovers the unmeasured phases to synthesize an image. By avoiding the use of a\nlens the resolution is limited, in principle, only by the largest scattering\nangles recorded. However, the imaging task is shifted from the experiment to\nthe computer, and the algorithm\u0027s ability to recover meaningful images in the\npresence of noise and limited prior knowledge may produce aberrations in the\nreconstructed image. We analyze the low order aberrations produced by our phase\nretrieval algorithms. We present two methods to improve the accuracy and\nstability of reconstructions.",
"arxiv_id": "physics/0510033",
"authors": [
"S. Marchesini",
"H. N. Chapman",
"A. Barty",
"C. Cui",
"M. R. Howells",
"J. C. H. Spence",
"U. Weierstall",
"A. M. Minor"
],
"categories": [
"physics.optics"
],
"journal_ref": "IPAP Conf. Series 7 pp.380-382, 2006",
"title": "Phase Aberrations in Diffraction Microscopy",
"url": "https://arxiv.org/abs/physics/0510033"
},
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