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231225s2018 xx |||||o 00| ||eng c |
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|a 10.1107/S1600577518005945
|2 doi
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|a pubmed24n0954.xml
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|a (DE-627)NLM286219409
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|a (NLM)29979164
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Gog, Thomas
|e verfasserin
|4 aut
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|a Performance of quartz- and sapphire-based double-crystal high-resolution (∼10 meV) RIXS monochromators under varying power loads
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|c 2018
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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 Revised 20.11.2019
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a In the context of a novel, high-resolution resonant inelastic X-ray scattering spectrometer, a flat-crystal-based quartz analyzer system has recently been demonstrated to provide an unprecedented intrinsic-energy resolution of 3.9 meV at the Ir L3 absorption edge (11.215 keV) [Kim et al. (2018) Sci. Rep. 8, 1958]. However, the overall instrument resolution was limited to 9.7 meV because of an 8.9 meV incident band pass, generated by the available high-resolution four-bounce Si(844) monochromator. In order to better match the potent resolving power of the novel analyzer with the energy band pass of the incident beam, a quartz(309)-based double-bounce, high-resolution monochromator was designed and implemented, expected to yield an overall instrument resolution of 6.0 meV. The choice of lower-symmetry quartz is very attractive because of its wealth of suitable near-backscattering reflections. However, it was found that during room-temperature operation typical levels of incident power, barely affecting the Si monochromator, caused substantial thermal distortions in the first crystal of the quartz monochromator, rendering it practically unusable. Finite-element analyses and heat-flow analyses corroborate this finding. As a high-flux, lower resolution (15.8 meV) alternative, a two-bounce sapphire(078) version was also tested and found to be less affected than quartz, but notably more than silicon
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|a Journal Article
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|a RIXS
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|a X-ray optics
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|a high-resolution monochromators
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|a non-traditional crystal materials
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|a resonant inelastic X-ray scattering
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|a Casa, Diego M
|e verfasserin
|4 aut
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|a Knopp, Jonathan
|e verfasserin
|4 aut
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|a Kim, Jungho
|e verfasserin
|4 aut
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|a Upton, Mary H
|e verfasserin
|4 aut
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|a Krakora, Richard
|e verfasserin
|4 aut
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|a Jaski, Alan
|e verfasserin
|4 aut
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|a Said, Ayman
|e verfasserin
|4 aut
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|a Yavaş, Hasan
|e verfasserin
|4 aut
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|a Gretarsson, Hlynur
|e verfasserin
|4 aut
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|a Huang, Xian Rong
|e verfasserin
|4 aut
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|i Enthalten in
|t Journal of synchrotron radiation
|d 1994
|g 25(2018), Pt 4 vom: 01. Juli, Seite 1030-1035
|w (DE-627)NLM09824129X
|x 1600-5775
|7 nnns
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|g volume:25
|g year:2018
|g number:Pt 4
|g day:01
|g month:07
|g pages:1030-1035
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|u http://dx.doi.org/10.1107/S1600577518005945
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