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231223s2007 xx ||||| 00| ||eng c |
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|a pubmed24n0562.xml
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|a (DE-627)NLM168577593
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|a (NLM)17317922
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Shastri, S D
|e verfasserin
|4 aut
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|a High-energy X-ray optics with silicon saw-tooth refractive lenses
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|c 2007
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|a Text
|b txt
|2 rdacontent
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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|a Band
|b nc
|2 rdacarrier
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| 500 |
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|a Date Completed 25.04.2007
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|a Date Revised 23.02.2007
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Silicon saw-tooth refractive lenses have been in successful use for vertical focusing and collimation of high-energy X-rays (50-100 keV) at the 1-ID undulator beamline of the Advanced Photon Source. In addition to presenting an effectively parabolic thickness profile, as required for aberration-free refractive optics, these devices allow high transmission and continuous tunability in photon energy and focal length. Furthermore, the use of a single-crystal material (i.e. Si) minimizes small-angle scattering background. The focusing performance of such saw-tooth lenses, used in conjunction with the 1-ID beamline's bent double-Laue monochromator, is presented for both short ( approximately 1:0.02) and long ( approximately 1:0.6) focal-length geometries, giving line-foci in the 2 microm-25 microm width range with 81 keV X-rays. In addition, a compound focusing scheme was tested whereby the radiation intercepted by a distant short-focal-length lens is increased by having it receive a collimated beam from a nearer (upstream) lens. The collimation capabilities of Si saw-tooth lenses are also exploited to deliver enhanced throughput of a subsequently placed small-angular-acceptance high-energy-resolution post-monochromator in the 50-80 keV range. The successful use of such lenses in all these configurations establishes an important detail, that the pre-monochromator, despite being comprised of vertically reflecting bent Laue geometry crystals, can be brilliance-preserving to a very high degree
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|a Journal Article
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|a Almer, J
|e verfasserin
|4 aut
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1 |
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|a Ribbing, C
|e verfasserin
|4 aut
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|a Cederström, B
|e verfasserin
|4 aut
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|i Enthalten in
|t Journal of synchrotron radiation
|d 1994
|g 14(2007), Pt 2 vom: 01. März, Seite 204-11
|w (DE-627)NLM09824129X
|x 1600-5775
|7 nnns
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| 773 |
1 |
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|g volume:14
|g year:2007
|g number:Pt 2
|g day:01
|g month:03
|g pages:204-11
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|a GBV_ILN_2005
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|a AR
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|d 14
|j 2007
|e Pt 2
|b 01
|c 03
|h 204-11
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