1 November 1997 X-ray standing wave between separated crystals at a 90-deg Bragg reflection
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An experimental set-up for the observation of intensity fringes of x-rays propagating in vacuum between two separated crystals is reported. In this experiment a Bragg reflection near 90 degrees was used to observe the oscillations of the measured intensity between the monochromator and mirror crystals. The x-ray intensity profiles; were collected as a function of the angular position of the crystal-mirror in the vicinity of a Si(800) reflection at a synchrotron radiation energy of about 9.1344 keV. Interference contrast in the experimentally observed intensity profiles proves the phase-sensitive nature of the intensity fringes. Novel approach to interpretation of synchrotron radiation coherence is discussed. The experimental observations open new possibilities for novel applications in high-energy radiation optics.
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Andrei Yurievich Nikulin, Andrei Yurievich Nikulin, John R. Davis, John R. Davis, David Cookson, David Cookson, "X-ray standing wave between separated crystals at a 90-deg Bragg reflection", Proc. SPIE 3154, Coherent Electron-Beam X-Ray Sources: Techniques and Applications, (1 November 1997); doi: 10.1117/12.279385; https://doi.org/10.1117/12.279385

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