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A silicon 〈111〉 phase retarder for producing circularly polarized x-rays in the 2.1-3 keV energy range
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Bouchenoire, Laurence, Morris, R. J. H. (Richard J. H.) and Hase, Thomas P. A. (2012) A silicon 〈111〉 phase retarder for producing circularly polarized x-rays in the 2.1-3 keV energy range. Applied Physics Letters, Vol.101 (No.6). 064107. doi:10.1063/1.4740080
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Official URL: http://dx.doi.org/10.1063/1.4740080
Abstract
Circularly polarized synchrotron light is routinely used to study different material properties but is difficult to generate reproducibly below 3.1 keV. We present data from a 5 μm Si 〈111〉 phase retarder (PR) designed to operate in the 2.1 to 3 keV energy range. Measurements were performed at the Pd L3 edge to enable direct comparison with a conventional diamond PR. The degree of circular polarization was ascertained indirectly by recording the resonant specular reflectivity from a [Fe(2 ML)/Pd(15 ML)]×20 multilayer. Our findings show that such a device can be used to extend the usable energy capability of PR technology down to 2.1 keV.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QC Physics | ||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
| Journal or Publication Title: | Applied Physics Letters | ||||
| Publisher: | American Institute of Physics | ||||
| ISSN: | 0003-6951 | ||||
| Official Date: | 6 August 2012 | ||||
| Dates: |
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| Volume: | Vol.101 | ||||
| Number: | No.6 | ||||
| Number of Pages: | 4 | ||||
| Page Range: | 064107 | ||||
| DOI: | 10.1063/1.4740080 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Funder: | UK Engineering and Physical Sciences Research Council |
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