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Phys. Rev. Lett. 94, 174801 (2005) [4 pages]

X-Ray Resonance in Crystal Cavities: Realization of Fabry-Perot Resonator for Hard X Rays

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S.-L. Chang1,2,*, Yu. P. Stetsko2, M.-T. Tang2, Y.-R. Lee1, W.-H. Sun1, M. Yabashi3, and T. Ishikawa3,4
1Department of Physics, National Tsing Hua University (NTHU), Hsinchu, Taiwan 300, Republic of China
2National Synchrotron Radiation Research Center (NSRRC), Hsinchu, Taiwan 300, Republic of China
3SPring-8/JASRI, Mikazuki, Hyogo 679-5198, Japan
4SPring-8/RIKEN, Mikazuki, Hyogo 679-5148, Japan

Received 9 August 2004; published 5 May 2005

X-ray back diffraction from monolithic two silicon crystal plates of 25–150   μm thickness and a 40–150   μm gap using synchrotron radiation of energy resolution ΔE=0.36  meV at 14.4388 keV clearly show 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 wave fields 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.

© 2005 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.94.174801
DOI:
10.1103/PhysRevLett.94.174801
PACS:
41.50.+h, 07.60.Ly, 61.10.Nz

*To whom correspondence should be addressed.

Electronic address: slchang@phys.nthu.edu.tw

 
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