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Coherence properties of focused X-ray beams at high-brilliance synchrotron sources
An analytical approach describing properties of focused partially coherent X-ray beams is presented. The method is based on the results of statistical optics and gives both the beam size and transverse coherence length at any distance behind an optical element. In particular, here Gaussian Schell-mo...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
International Union of Crystallography
2014
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3874016/ https://www.ncbi.nlm.nih.gov/pubmed/24365911 http://dx.doi.org/10.1107/S1600577513023850 |
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author | Singer, Andrej Vartanyants, Ivan A. |
author_facet | Singer, Andrej Vartanyants, Ivan A. |
author_sort | Singer, Andrej |
collection | PubMed |
description | An analytical approach describing properties of focused partially coherent X-ray beams is presented. The method is based on the results of statistical optics and gives both the beam size and transverse coherence length at any distance behind an optical element. In particular, here Gaussian Schell-model beams and thin optical elements are considered. Limiting cases of incoherent and fully coherent illumination of the focusing element are discussed. The effect of the beam-defining aperture, typically used in combination with focusing elements at synchrotron sources to improve transverse coherence, is also analyzed in detail. As an example, the coherence properties in the focal region of compound refractive lenses at the PETRA III synchrotron source are analyzed. |
format | Online Article Text |
id | pubmed-3874016 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2014 |
publisher | International Union of Crystallography |
record_format | MEDLINE/PubMed |
spelling | pubmed-38740162013-12-30 Coherence properties of focused X-ray beams at high-brilliance synchrotron sources Singer, Andrej Vartanyants, Ivan A. J Synchrotron Radiat Research Papers An analytical approach describing properties of focused partially coherent X-ray beams is presented. The method is based on the results of statistical optics and gives both the beam size and transverse coherence length at any distance behind an optical element. In particular, here Gaussian Schell-model beams and thin optical elements are considered. Limiting cases of incoherent and fully coherent illumination of the focusing element are discussed. The effect of the beam-defining aperture, typically used in combination with focusing elements at synchrotron sources to improve transverse coherence, is also analyzed in detail. As an example, the coherence properties in the focal region of compound refractive lenses at the PETRA III synchrotron source are analyzed. International Union of Crystallography 2014-01-01 2013-11-02 /pmc/articles/PMC3874016/ /pubmed/24365911 http://dx.doi.org/10.1107/S1600577513023850 Text en © Singer and Vartanyants 2014 http://creativecommons.org/licenses/by/2.0/uk/ This is an open-access article distributed under the terms of the Creative Commons Attribution Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited. |
spellingShingle | Research Papers Singer, Andrej Vartanyants, Ivan A. Coherence properties of focused X-ray beams at high-brilliance synchrotron sources |
title | Coherence properties of focused X-ray beams at high-brilliance synchrotron sources |
title_full | Coherence properties of focused X-ray beams at high-brilliance synchrotron sources |
title_fullStr | Coherence properties of focused X-ray beams at high-brilliance synchrotron sources |
title_full_unstemmed | Coherence properties of focused X-ray beams at high-brilliance synchrotron sources |
title_short | Coherence properties of focused X-ray beams at high-brilliance synchrotron sources |
title_sort | coherence properties of focused x-ray beams at high-brilliance synchrotron sources |
topic | Research Papers |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3874016/ https://www.ncbi.nlm.nih.gov/pubmed/24365911 http://dx.doi.org/10.1107/S1600577513023850 |
work_keys_str_mv | AT singerandrej coherencepropertiesoffocusedxraybeamsathighbrilliancesynchrotronsources AT vartanyantsivana coherencepropertiesoffocusedxraybeamsathighbrilliancesynchrotronsources |