Simulation of hard x-ray focusing using an array of cylindrical micro-holes in a diamond film
A. G. Nalimovab, V. V. Kotlyarab, V. I. Konovc
a Samara National Research University, Samara, Russia
b Image Processing Systems Institute of the RAS - Branch of the FSRC "Crystallography and Photonics" RAS, Samara, Russia
c Natural Science Center General Physics Institute, Moscow, Russia
The focusing of hard x-rays was numerically simulated using a beam propagation method implemented in the BeamPROP software package and a Rayleigh-Sommerfeld integral. It was shown that when focusing hard X-rays of wavelength 1.34 A with sequentially arranged circular cylindrical microlenses (shaped as 10-$\mu $m micro-holes) found in a polycrystalline diamond film, a nearly 10 times shorter focal length of the microlens array can be achieved, reducing from 14.4 cm to 15 mm, via increasing the number of microlenses from 1 to 20. Meanwhile, the x-ray focal spot size was found to decrease 7 times along the minor axis from 1.5 $\mu$m to 200 nm, while the maximum intensity in the focus experienced a 40-times increase.
X-ray, cylindrical lens, diamond film.
|Russian Science Foundation
|The work was funded by the Russian Science Foundation (grant No. 14-22-00243).
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A. G. Nalimov, V. V. Kotlyar, V. I. Konov, “Simulation of hard x-ray focusing using an array of cylindrical micro-holes in a diamond film”, Computer Optics, 41:6 (2017), 796–802
Citation in format AMSBIB
\by A.~G.~Nalimov, V.~V.~Kotlyar, V.~I.~Konov
\paper Simulation of hard x-ray focusing using an array of cylindrical micro-holes in a diamond film
\jour Computer Optics
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