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Proceedings Paper

X-ray optical projection microscope based on polycapillary Kumakhov optics
Author(s): A. G. Touriyanski; O. A. Matveeva; N. Yu. Narimanova; I. V. Pirshin
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Paper 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.

Paper Details

Date Published: 6 December 2006
PDF: 9 pages
Proc. SPIE 5943, X-ray and Neutron Capillary Optics II, 594313 (6 December 2006); doi: 10.1117/12.638003
Show Author Affiliations
A. G. Touriyanski, P.N. Lebedev Physical Institute, RAS (Russia)
O. A. Matveeva, Institute for Roentgen Optics (Russia)
N. Yu. Narimanova, P.N. Lebedev Physical Institute, RAS (Russia)
I. V. Pirshin, P.N. Lebedev Physical Institute, RAS (Russia)

Published in SPIE Proceedings Vol. 5943:
X-ray and Neutron Capillary Optics II
Muradin A. Kumakhov; Richard B. Hoover, Editor(s)

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