Formation of x-ray vortex dipoles using a single diffraction pattern and direct phase measurement using interferometry

Kohmura, Yoshiki; Sawada, Kei; Taguchi, Munetaka; Ishikawa, Tetsuya; Ohigashi, Takuji; Suzuki, Yoshio
March 2009
Applied Physics Letters;3/9/2009, Vol. 94 Issue 10, pN.PAG
Academic Journal
We have devised a method for generating x-ray vortices by using a diffraction pattern from a simple aperture with illumination wave fronts with spherical curvatures. The interferometry visualized the x-ray vortex dipoles by the direct phase measurement. Our interference technique enabled us to sensitively detect and quantitatively measure various phase dislocations on the x-ray wave fronts, providing useful methodologies for beam diagnostics and materials science.


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