| Autor: |
Nowak, S. H., Scharf, O., Bjeoumikhov, A., Borany, J., Buchriegler, J., Munnik, F., Renno, A. D., Ziegenrücker, R., Soltau, H., Strüder, L., Wedell, R. |
| Jazyk: |
angličtina |
| Rok vydání: |
2014 |
| Předmět: |
|
| Zdroj: |
European Conference on X-Ray Spectrometry, 15.-20.06.2014, Bologna, Italien |
| Popis: |
SLcam® – a full-field energy dispersive portable X-ray camera [1,2], is a combination of a single photon counting CCD with a poly capillary optics objective. The standard CCD matrix consist of 48×48 μm2 pixels sensitive for photons from 3 to 18 keV and has an energy resolution of 156 eV (@Mn Kα). The polycapillary optics is used to achieve the spatial resolution guiding the fluorescence photons from the point of origin to the detection pixel. The device allows fast overview over a large detection area with first results visible almost immediately. A dedicated software enables steering the camera and online visualization of the hyper spectral data cube (x,y,E) by displaying regional spectra, element/line maps and overlay images. With the use of a sub-pixel resolution algorithm the SLcam® spatial resolution becomes limited by the end diameter of a single capillary channel. A one to one optics, with a field of view of 12 × 12 mm2, can reach a resolution of 20 μm. This optics has an unlimited depth of sharpness and is ideal to visualize uneven objects. With the use of a conical shaped optics allowing 8 times magnification and a field of view of 1.5 × 1.5 mm2 a resolution approaching 1 μm is possible also with laboratory X-ray sources. We will present recent developments for the SLcam® concerning the sub-pixel resolution, optics aperture, image processing software, and connection to new High-Speed PIXE beamline at Helmholtz-Zentrum Dresden-Rossendorf (HZDR). [1] O. Scharf, et al., Analytical Chemistry, 83 (7), 2011, 2532-2538. [2] I. Ordavo, et al., NIM A, 654 (1), 2012, 250-257. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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