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231223s2009 xx |||||o 00| ||eng c |
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|a 10.1107/S0909049508034134
|2 doi
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|a pubmed25n0618.xml
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|a (DE-627)NLM185302483
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|a (NLM)19096180
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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 Liu, Din Goa
|e verfasserin
|4 aut
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|a A dedicated small-angle X-ray scattering beamline with a superconducting wiggler source at the NSRRC
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|c 2009
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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 25.02.2009
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|a Date Revised 19.12.2008
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a At the National Synchrotron Radiation Research Center (NSRRC), which operates a 1.5 GeV storage ring, a dedicated small-angle X-ray scattering (SAXS) beamline has been installed with an in-achromat superconducting wiggler insertion device of peak magnetic field 3.1 T. The vertical beam divergence from the X-ray source is reduced significantly by a collimating mirror. Subsequently the beam is selectively monochromated by a double Si(111) crystal monochromator with high energy resolution (DeltaE/E approximately 2 x 10(-4)) in the energy range 5-23 keV, or by a double Mo/B4C multilayer monochromator for 10-30 times higher flux ( approximately 10(11) photons s(-1)) in the 6-15 keV range. These two monochromators are incorporated into one rotating cradle for fast exchange. The monochromated beam is focused by a toroidal mirror with 1:1 focusing for a small beam divergence and a beam size of approximately 0.9 mm x 0.3 mm (horizontal x vertical) at the focus point located 26.5 m from the radiation source. A plane mirror installed after the toroidal mirror is selectively used to deflect the beam downwards for grazing-incidence SAXS (GISAXS) from liquid surfaces. Two online beam-position monitors separated by 8 m provide an efficient feedback control for an overall beam-position stability in the 10 microm range. The beam features measured, including the flux density, energy resolution, size and divergence, are consistent with those calculated using the ray-tracing program SHADOW. With the deflectable beam of relatively high energy resolution and high flux, the new beamline meets the requirements for a wide range of SAXS applications, including anomalous SAXS for multiphase nanoparticles (e.g. semiconductor core-shell quantum dots) and GISAXS from liquid surfaces
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|a Journal Article
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|a Chang, Chien Hung
|e verfasserin
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|a Liu, Chin Yen
|e verfasserin
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|a Chang, Shih Hung
|e verfasserin
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|a Juang, Jwei Ming
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|a Song, Yen Fang
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|a Yu, Kuan Li
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|a Liao, Kuei Fen
|e verfasserin
|4 aut
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|a Hwang, Ching Shiang
|e verfasserin
|4 aut
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|a Fung, Hok Sum
|e verfasserin
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|a Tseng, Ping Chung
|e verfasserin
|4 aut
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|a Huang, Chi Yi
|e verfasserin
|4 aut
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|a Huang, Liang Jen
|e verfasserin
|4 aut
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|a Chung, Shih Chun
|e verfasserin
|4 aut
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|a Tang, Mau Tsu
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|4 aut
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|a Tsang, King Long
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|4 aut
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|a Huang, Yu Shan
|e verfasserin
|4 aut
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|a Kuan, Chien Kuang
|e verfasserin
|4 aut
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| 700 |
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|a Liu, Yi Chih
|e verfasserin
|4 aut
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| 700 |
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|a Liang, Keng S
|e verfasserin
|4 aut
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| 700 |
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|a Jeng, U Ser
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of synchrotron radiation
|d 1994
|g 16(2009), Pt 1 vom: 13. Jan., Seite 97-104
|w (DE-627)NLM09824129X
|x 1600-5775
|7 nnns
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| 773 |
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|g volume:16
|g year:2009
|g number:Pt 1
|g day:13
|g month:01
|g pages:97-104
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|u http://dx.doi.org/10.1107/S0909049508034134
|3 Volltext
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