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8 September 2009 Absolute efficiency measurement of high-performance zone plates
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Abstract
An absolute efficiency measurement technique for Fresnel zone plates using an electron impact micro-focus laboratory X-ray source (Lα line of Tungsten at 8.4 KeV) is demonstrated. A quasi-monochromatic x-ray image of a zone plate was obtained employing a pair of copper and cobalt filters. Applying this method to zone plates optimizes the zone plate fabrication process and provides the ability to explore zone geometry to achieve the best possible efficiency. Several zone plate parameters were tested with first order efficiency measuring from 1% to 29%.
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Sharon Chen, Alan Lyon, Janos Kirz, Srivatsan Seshadri, Yan Feng, Michael Feser, Simone Sassolini, Fred Duewer, Xianghui Zeng, and Carson Huang "Absolute efficiency measurement of high-performance zone plates", Proc. SPIE 7448, Advances in X-Ray/EUV Optics and Components IV, 74480D (8 September 2009); https://doi.org/10.1117/12.825367
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