X-ray optical projection microscope based on polycapillary Kumakhov optics

A. G. Touriyanski; O. A. Matveeva; N. Yu. Narimanova; I. V. Pirshin

doi:10.1117/12.638003

6 December 2006 X-ray optical projection microscope based on polycapillary Kumakhov optics

A. G. Touriyanski, O. A. Matveeva, N. Yu. Narimanova, I. V. Pirshin

Proceedings Volume 5943, X-ray and Neutron Capillary Optics II; 594313 (2006) https://doi.org/10.1117/12.638003
Event: X-ray and Neutron Capillary Optics II, 2004, Zvenigorod, Russian Federation

Abstract

The X-ray projection microscope with the use of polycapillary optics is described. The focusing Kumakhov lens with a focus size of 1 50 m and an energy-dispersive Si-detector allow local analysis of chemical elements concentrations and distributuions. The same lens can be used for local radiation procession with a dose rate up to 10 Gy/s. Digital projections are recorded by the 1300x1030 detecting array with a pixel size of 6.7 μm. The radiation spectrum can be strongly modulated by changing X-ray source voltage, rotation the filter cassette, and by placing in the incident beam the polycapillary half-lens. Conditions for enhancing image contrast by the digital subtraction of X-ray projections registered at different spectrum distributions in the energy range of 5-25 keV are considered. It is shown that when an object is irradiated by polychromatic radiation, the use of a Ni filter and a NiCl₂ contrast solution provides results that were previously obtained by subtracting images with monochromatic spectral lines near the K-jump of absorption in the contrast media. X-ray fluorescence spectra and contrast enhanced images of biological objects are presented.

Citation Download Citation

A. G. Touriyanski, O. A. Matveeva, N. Yu. Narimanova, and I. V. Pirshin "X-ray optical projection microscope based on polycapillary Kumakhov optics", Proc. SPIE 5943, X-ray and Neutron Capillary Optics II, 594313 (6 December 2006); https://doi.org/10.1117/12.638003

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