Simulation of hard x-ray focusing using an array of cylindrical micro-holes in a diamond film
Nalimov A.G., Kotlyar V.V., Konov V.I.

 

Samara National Research University, Samara, Russia,
Image Processing Systems Institute of the RAS – Branch of the FSRC “Crystallography and Photonics” RAS, Samara, Russia,

Natural Science Center General Physics Institute, Moscow, Russia

Full text of article: Russian language.

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Abstract:
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-µm 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 μm to 200 nm, while the maximum intensity in the focus experienced a 40-times increase.

Keywords:
X-ray, cylindrical lens, diamond film.

Citation:
Nalimov AG, Kotlyar VV, Konov VI. Simulation of hard x-ray focusing using an array of cylindrical micro-holes in a diamond film. Computer Optics 2017; 41(6): 796-802. DOI: 10.18287/2412-6179-2017-41-6-796-802.

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