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arXiv · 1210.4344

The SLcam: A full-field energy dispersive X-ray camera

A. Bjeoumikhov·G. Buzanich·N. Langhoff·I. Ordavo·M. Radtke·U. Reinholz·H. Riesemeier·O. Scharf·H. Soltau·R. Wedell
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Abstract

The color X-ray camera (SLcam) is a full-field single photon imager. As stand-alone camera, it is applicable for energy and space-resolved X-ray detection measurements. The exchangeable poly-capillary optics in front of a beryllium entrance window conducts X-ray photons from the probe to distinguished energy dispersive pixels on a pnCCD. The dedicated software enables the acquisition and the online processing of the spectral data for all 69696 pixels, leading to a real-time visualization of the element distribution in a sample. No scanning system is employed. A first elemental composition image of the sample is visible within minutes while statistics is improving in the course of time. Straight poly-capillary optics allows for 1:1 imaging with a space resolution of 50 um and no limited depth of sharpness, ideal to map uneven objects. Using conically shaped optics, a magnification of 6 times was achieved with a space resolution of 10 um. We present a measurement with a laboratory source showing the camera capability to perform fast full-field X-ray Fluorescence (FF-XRF) imaging with an easy, portable and modular setup.

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A. Bjeoumikhov, G. Buzanich, N. Langhoff, I. Ordavo, M. Radtke, U. Reinholz, H. Riesemeier, O. Scharf, H. Soltau, R. Wedell. 2012-10-16. The SLcam: A full-field energy dispersive X-ray camera. https://doi.org/10.1088/1748-0221/7/11/c11008

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