Lenses with high numerical aperture are required for images with very high spatial resolution, which is difficult to realize in the x-ray range because of low-refraction-index decrement and relatively high absorption of x-rays in the material. However, such an aperture can be realized by means of a mosaic lens, as shown in this work.
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| http://dx.doi.org/10.1364/AO.55.007138 | DOI Listing |
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