For the first time the scheme of scanning transmission x-ray microscopy is realized on the basis of polycapillary Kumakhov optics and the raster microfocus x-ray source. X-ray microbeam with high density flux is created by scanning of a focal spot on the tube target area; polycapillary structure is stationary fixed at the tube outlet. Results of using the tubes with transmission and reflection anodes are submitted. Besides the similar raster system allows to realize express alignment procedure and to estimate the spot size ofKumakhov optics.
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