Skip to main page content
Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
, 14 (Pt 4), 326-30

Two-step Hard X-ray Focusing Combining Fresnel Zone Plate and Single-Bounce Ellipsoidal Capillary

Affiliations

Two-step Hard X-ray Focusing Combining Fresnel Zone Plate and Single-Bounce Ellipsoidal Capillary

A Snigirev et al. J Synchrotron Radiat.

Abstract

A two-step focusing set-up combining a Fresnel zone plate with an ellipsoidal capillary is presented. It is shown that, in addition to the anticipated gain in flux, the employment of the prefocusing micro-optic makes optimal use of the elliptical shape of the capillary by almost eliminating aberrations. A small cross section of the prefocused beam allows a tiny fraction of the capillary surface to be selected, thus reducing the influence of slope errors. An X-ray beam with a 15 keV energy was focused down to a spot size as small as 250 nm, demonstrating the best value that has been achieved up to now for single-bounce capillaries. The use of an ellipsoidal capillary as a micromirror under off-axis illumination by microfocusing optics may open up new opportunities in nanofocusing developments.

Similar articles

See all similar articles

Cited by 3 PubMed Central articles

LinkOut - more resources

Feedback