DIFFRACTION UNIT FOR CONTROLLING CONVERGENCE OF X-RAY BEAM Russian patent published in 2017 - IPC G21K1/06 

FIELD: physics.

SUBSTANCE: diffraction unit includes a diffractive element in the form of a diffractive single-crystal plate and a substrate, to which the plate is glued with the curvature of its working surface forming the profile of the diffractive element. The claimed device is made using shrinkage of the adhesive layer upon its solidification.

EFFECT: stable obtaining the given curvature of the working surface of a diffractive single-crystal plate specifying the required form of convergence of the X-ray beam, while maintaining the extended amplitude range of tuning temperature changes of the resulting curvature of the working surface of the diffractive single-crystal plate, increasing the controllability of the formation of the desired profile of the diffractive element as a result of introducing a constructive stabilizing factor of the curved substrate surface located on its side opposite to its adhesive side.

8 cl, 4 dwg, 4 ex