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- aggregation classification "P1".
- aggregation creator B106242.
- aggregation creator B106243.
- aggregation creator B106244.
- aggregation creator B106245.
- aggregation creator person.
- aggregation creator person.
- aggregation creator person.
- aggregation date "2009".
- aggregation format "application/pdf".
- aggregation hasFormat 967353.bibtex.
- aggregation hasFormat 967353.csv.
- aggregation hasFormat 967353.dc.
- aggregation hasFormat 967353.didl.
- aggregation hasFormat 967353.doc.
- aggregation hasFormat 967353.json.
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- aggregation hasFormat 967353.rdf.
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- aggregation hasFormat 967353.txt.
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- aggregation hasFormat 967353.yaml.
- aggregation isPartOf urn:issn:1742-6588.
- aggregation language "eng".
- aggregation publisher "IOP Publishing".
- aggregation rights "I have transferred the copyright for this publication to the publisher".
- aggregation subject "Earth and Environmental Sciences".
- aggregation title "Polycapillary based µ-XAS and confocal µ-XANES at a bending magnet source of the ESRF".
- aggregation abstract "Glass polycapillary optics are shown to be easy to use focusing optics for bending magnet XAS stations. These achromatic optics have acceptances of several mm horizontally and vertically, while their angular acceptances can be matched to the source divergence by the design of the polycapillary. A polycapillary half-lens based focusing system was successfully tested for transmission and fluorescence µ-XAS at the DUBBLE beamline (BM26A, ESRF) and the feasibility of confocal µ-XANES in fluorescence mode is presented. Transmission efficiencies of 25-45% with flux density gain factors of about 2000 and beam sizes of 10-20 µm were obtained in the 7-14 keV energy range. Although the polycapillary optic has a smoothly changing energy dependent transmission efficiency, the amplitude and shape of the EXAFS oscillations are not influenced by this. The focusing properties of the polycapillary lens cancel slight vertical motions of the incoming X-ray beam, resulting in a fixed µ-beam spot in the focal plane, making polycapillaries also suitable optic in combination with a non-fixed exit monochromator. In addition, by mounting a second polycapillary half-lens in front of an energy dispersive detector, a confocal set-up is obtained, which restricts the part of the sample seen by the detector to a microscopic volume of about 20×20×15 µm3 at the Fe K absorption edge for example.".
- aggregation authorList BK272126.
- aggregation volume "190".
- aggregation aggregates 967369.
- aggregation isDescribedBy 967353.
- aggregation similarTo 012036.
- aggregation similarTo LU-967353.