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X-ray Resonance in Crystal Cavities--Realization of Fabry-Perot Resonator for Hard X-rays

S. -L. Chang·Yu. P. Stetsko·M. -T. Tang·Y. -R. Lee·W. -H. Sun·M. Yabashi·T. Ishikawa
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Abstract

X-ray back diffraction from monolithic two silicon crystal plates of 25--150 um thick and a 40--150 um gap using synchrotron radiation of energy resolution deltaE=0.36 meV at 14.4388 keV shows clearly resonance fringes inside the energy gap and the total-reflection range for the (12 4 0) reflection. This cavity resonance results from the coherent interaction between the X-ray wavefields generated by the two plates with a gap smaller than the X-ray coherence length. This finding opens up new opportunities for high-resolution and phase-contrast X-ray studies, and may lead to new developments in X-ray optics.

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S. -L. Chang, Yu. P. Stetsko, M. -T. Tang, Y. -R. Lee, W. -H. Sun, M. Yabashi, T. Ishikawa. 2004-12-17. X-ray Resonance in Crystal Cavities--Realization of Fabry-Perot Resonator for Hard X-rays. https://doi.org/10.1103/physrevlett.94.174801

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