Abstract

Lobster-eye optics is widely applied to space x-ray detection missions and x-ray security checks for its wide field of view and low weight. This paper presents a theoretical model to obtain spatial distribution of focusing efficiency based on lobster-eye optics in a soft x-ray wavelength. The calculations reveal the competition mechanism of contributions to the focusing efficiency between the geometrical parameters of lobster-eye optics and the reflectivity of the iridium film. In addition, the focusing efficiency image depending on x-ray wavelengths further explains the influence of different geometrical parameters of lobster-eye optics and different soft x-ray wavelengths on focusing efficiency. These results could be beneficial to optimize parameters of lobster-eye optics in order to realize maximum focusing efficiency.

© 2017 Optical Society of America

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Supplementary Material (5)

NameDescription
» Data File 1       Iridium reflectivity of x rays with different energies varies with incident angles
» Data File 2       Efficiency curves on the diagonal of a piece of a 700 mm curvature radius MPO for varrious reflections and x-ray sources at infinity.
» Data File 3       Efficiency peak position in Fig. 5 (a) varies with incidence x-ray energy for a 700 mm curvature radius MPO.
» Data File 4       Efficiency curves on the diagonal of a piece of an 800 mm curvature radius MPO for various reflections and x-ray sources at infinity.
» Data File 5       Efficiency peak position in Fig. 6(a) with incidence x-ray energy for an 800 mm curvature radius MPO.

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