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231224s2013 xx |||||o 00| ||eng c |
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|a 10.1107/S0909049513001817
|2 doi
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|a pubmed24n0750.xml
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|a (DE-627)NLM225054396
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|a (NLM)23412487
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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1 |
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|a Rutishauser, Simon
|e verfasserin
|4 aut
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|a Heat bump on a monochromator crystal measured with X-ray grating interferometry
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|c 2013
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 06.08.2013
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|a Date Revised 15.02.2013
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Deformation of the first crystal of an X-ray monochromator under the heat load of a high-power beam, commonly referred to as `heat bump', is a challenge frequently faced at synchrotron beamlines. Here, quantitative measurements of the deformations of an externally water-cooled silicon (111) double-crystal monochromator tuned to a photon energy of 17.6 keV are reported. These measurements were made using two-dimensional hard X-ray grating interferometry, a technique that enables in situ at-wavelength wavefront investigations with high angular sensitivity. The observed crystal deformations were of the order of 100 nm in the meridional and 5 nm in the sagittal direction, which lead to wavefront slope errors of up to 4 µrad in the meridional and a few hundred nanoradians in the sagittal direction
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Research Support, U.S. Gov't, Non-P.H.S.
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|a double-crystal monochromator
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|a grating interferometry
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|a heat bump
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|a wavefront characterization
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1 |
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|a Rack, Alexander
|e verfasserin
|4 aut
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1 |
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|a Weitkamp, Timm
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Kayser, Yves
|e verfasserin
|4 aut
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| 700 |
1 |
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|a David, Christian
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Macrander, Albert T
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of synchrotron radiation
|d 1994
|g 20(2013), Pt 2 vom: 21. März, Seite 300-5
|w (DE-627)NLM09824129X
|x 1600-5775
|7 nnns
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| 773 |
1 |
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|g volume:20
|g year:2013
|g number:Pt 2
|g day:21
|g month:03
|g pages:300-5
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|u http://dx.doi.org/10.1107/S0909049513001817
|3 Volltext
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|h 300-5
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