4 papers
Hard X-Ray Zernike-Type Phase-Contrast Imaging with a Two-Block Crystal System
Levon Haroutunyan
A novel scheme for Zernike-type hard X-ray phase-contrast imaging is proposed. The scheme relies on X-ray dynamical diffraction in a two-block crystal system with parallel crystal…
Hard X-Ray Phase-Contrast Laboratory Microscope Based on Three-Block Fresnel Zone Plate Interferometer
L. A. Haroutunyan
A device based on a three-block Fresnel zone plate interferometer is proposed for hard X-ray phase-contrast imaging. The device combines a low requirement for the coherence of the…
Noise Suppression in X-Ray Fourier-Transform Holography Based on Two-Block Fresnel Zone Plate Interferometer with Common Optical Axis
L. A. Haroutunyan
Strict requirements were imposed on the sizes of testing sample in the previously suggested scheme of hard X-ray Fourier-transform holography based on a two-block Fresnel zone plat…
Stacked Multilevel Fresnel Zone Plates for Hard X-Rays
L. Haroutunyan, K. Trouni, A. Kuyumchyan
The new type of multilevel Fresnel zone plate, consisting of stacked layers with bi-level zone profile has been investigated. The conditions of layers acting as single multilevel F…