NASA NTRS · 19780000487
Diffractoid x-ray focusing
Abstract
Presents aspheric concave diffraction surface that is able to focus sharply single wavelength of x-ray or ultraviolet radiation which may originate from either nearby or far-distant source.
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Kastner, S. O.. 1979-03-01. Diffractoid x-ray focusing. https://ntrs.nasa.gov/citations/19780000487
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