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Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating
Published on: October 11, 2016
X-ray dynamical diffraction wavefront division interferometer (double-slit diffraction) with an asymmetric
Vahram Mkrtchyan1, Minas Balyan1, Sargis Petrosyan1
1Institute of Physics, Yerevan State University, Alex Manoogian 1, Yerevan, 0025, Armenia.
Abstract:
For incident spherical waves, a system consisting of an asymmetric monochromator and an X-ray interferometer with wavefront division is considered. The wave reflected from the monochromator, having passed through a double-slit system, falls on the second crystal. The analysis leads to a requirement for the monochromator asymmetry coefficient that allows interference fringes to be observed in the diffracted beam. Diagrams are drawn that also allow determination of the observability of the fringes. The results obtained can be used for experimental observation of dynamical diffraction Young fringes, for realization of an X-ray interferometer with wavefront division, for determination of defects and deformation fields of the crystal, and for realization of a dynamical diffraction Fourier holographic scheme in the diffracted beam.
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