Format

Send to:

Choose Destination
See comment in PubMed Commons below
Rev Sci Instrum. 2010 Dec;81(12):123704. doi: 10.1063/1.3509384.

Wavefield characterization of nearly diffraction-limited focused hard x-ray beam with size less than 10 nm.

Author information

  • 1Department of Precision Science and Technology, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan. kimura@up.prec.eng.osaka-u.ac.jp

Abstract

In situ wavefront compensation is a promising method to realize a focus size of only a few nanometers for x-ray beams. However, precise compensation requires evaluation of the wavefront with an accuracy much shorter than the wavelength. Here, we characterized a one-dimensionally focused beam with a width of 7 nm at 20 keV using a multilayer mirror. We demonstrate that the wavefront can be determined precisely from multiple intensity profiles measured around the beamwaist. We compare the phase profiles recovered from intensity profiles measured under the same mirror condition but with three different aperture sizes and find that the accuracy of phase retrieval is as small as λ∕12.

PMID:
21198029
[PubMed]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for American Institute of Physics
    Loading ...
    Write to the Help Desk