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231224s2017 xx |||||o 00| ||eng c |
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|a 10.1107/S1600577517003058
|2 doi
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|a eng
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1 |
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|a Westfahl, Harry
|c Jr
|e verfasserin
|4 aut
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|a The coherent radiation fraction of low-emittance synchrotrons
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|c 2017
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 11.07.2017
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|a Date Revised 13.07.2017
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a In this work the coherence properties of the synchrotron radiation beam from an X-ray undulator in a fourth-generation storage ring are analyzed. A slightly focused X-ray beam is simulated using a wavefront propagation through a non-redundant array of slits and the mutual coherence function is directly obtained and compared with the Gaussian-Schell approximation. The numerical wave propagation and the approximate analytical approaches are shown to agree qualitatively, and it is also shown that, when the coherent fraction is selected by a finite aperture before the focusing element, even achromatic focusing systems like total reflection mirrors become slightly chromatic. This effect is also well accounted for in the Gaussian-Schell model. The wavefront propagation simulation through the non-redundant array was repeated with an imperfect mirror demonstrating that, although the wavefront is distorted, its coherent length is practically unchanged
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|a Journal Article
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|a Gaussian–Schell
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|a coherence
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|a diffraction-limit storage ring
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|a Lordano Luiz, Sérgio A
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Meyer, Bernd C
|e verfasserin
|4 aut
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| 700 |
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|a Meneau, Florian
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of synchrotron radiation
|d 1994
|g 24(2017), Pt 3 vom: 01. Mai, Seite 566-575
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|x 1600-5775
|7 nnns
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| 773 |
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|g volume:24
|g year:2017
|g number:Pt 3
|g day:01
|g month:05
|g pages:566-575
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|u http://dx.doi.org/10.1107/S1600577517003058
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