Wave effects in x-ray capillary optics

Wave effects in mono- and poly-capillary x-ray optics are studied theoretically. We consider the guided propagation of continuous-wave x-ray radiation in the spectral region of 0.01-1 nm. Optical guiding of x-ray ultra-short pulses is also studied. We show that the wave effects can strongly affect properties of x-ray capillary optics. The necessary conditions for the strong influence of the diffraction and interference on the guided propagation of x-rays are presented.