Observation of the focusing of x rays diffracted by a perfect crystal
Aristov V.V., Polovinkina V.I., Shmyt'ko I.M., Shulakov E.V.
Diffraction focusing of a weakly absorbed wave field was obtained for the first time ever under conditions of a large distance between the radiation source and the observation plane. Singularities not observable on ordinary section topograms were observed on the images of wedge-shaped crystals.