X-ray transmission of Kumakhov polycapillary lens up to 50 keV

S. M. Cheremisin; D. I. Gruev; S. V. Nikitina; D. V. Zaitsev

doi:10.1117/12.637926

6 December 2006 X-ray transmission of Kumakhov polycapillary lens up to 50 keV

S. M. Cheremisin, D. I. Gruev, S. V. Nikitina, D. V. Zaitsev

Proceedings Volume 5943, X-ray and Neutron Capillary Optics II; 59430M (2006) https://doi.org/10.1117/12.637926
Event: X-ray and Neutron Capillary Optics II, 2004, Zvenigorod, Russian Federation

Abstract

New series of polycapillary lens is developed for medium hard x-rays. At the x-ray energy about 50 keV these lenses give intensity gain in the focal spot (~O.15 mm dia.) at the distance ~0.5m more than two orders of magnitude compared to the direct beam through a pinhole. At 25 keV the gain exceeds 10³. At 22 keV x-ray energy (Ag line) these lenses transmit more than 25% of radiation falling onto entrance window with resultant effective capture solid angles up to 5•10^-4 steradian (25 mrad or 1.4 degree flat angle) and up to 3% with effective capture angles 5•10^-5 steradian (8 mrad or 0.45 degree flat) at 50 keV. Presented are spectral transmission data for such lenses with focal distances 100 to 250 mm. Radial distribution of transmission over the lens input window is also measured. Experimental results are compared with computer calculation.

Citation Download Citation

S. M. Cheremisin, D. I. Gruev, S. V. Nikitina, and D. V. Zaitsev "X-ray transmission of Kumakhov polycapillary lens up to 50 keV", Proc. SPIE 5943, X-ray and Neutron Capillary Optics II, 59430M (6 December 2006); https://doi.org/10.1117/12.637926

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