Numerical simulations of achromatic x-ray lenses

Marion Umbach; Vladimir Nazmov; Markus Simon; Arndt Last; Volker Saile

doi:10.1117/12.795222

3 September 2008 Numerical simulations of achromatic x-ray lenses

Marion Umbach, Vladimir Nazmov, Markus Simon, Arndt Last, Volker Saile

Proceedings Volume 7077, Advances in X-Ray/EUV Optics and Components III; 70770G (2008) https://doi.org/10.1117/12.795222
Event: Optical Engineering + Applications, 2008, San Diego, California, United States

Abstract

Over the last decade refractive lenses for monochromatic X-ray radiation have been realized for many different materials by microfabrication technology. All these lens systems are successfully working only for one discrete energy, i.e. the lenses are chromatic. Thus each discrete energy within a certain energy range has a different focal length. While the focal spot size is smaller than a micron for a particular energy at the corresponding focal distance, it increases up to several tens of microns for a larger energy range. We present results of numerical simulations for a new type of lens system which addresses this problem. We are developing achromats by combining different refractive elements of different materials. Via ray-tracing we determine the parameters of the lenses by minimizing the focal spot size for an energy range of about E ± ΔE with ΔE = 15%. Thus the spot size of an energy range can be noticeably reduced compared with conventional refractive (chromatic) lens systems.

Citation Download Citation

Marion Umbach, Vladimir Nazmov, Markus Simon, Arndt Last, and Volker Saile "Numerical simulations of achromatic x-ray lenses", Proc. SPIE 7077, Advances in X-Ray/EUV Optics and Components III, 70770G (3 September 2008); https://doi.org/10.1117/12.795222

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