White beam x-ray waveguide optics

Jarre, A.; Saldit, T.; Panzner, T.; Pietsch, U.; Pfeiffer, F.
July 2004
Applied Physics Letters;7/12/2004, Vol. 85 Issue 2, p161
Academic Journal
We report a white beam x-ray waveguide (WG) experiment. A resonant beam coupler x-ray waveguide (RBC) is used simultaneously as a broad bandpass (or multibandpass) monochromator and as a beam compressor. We show that, depending on the geometrical properties of the WG, the exiting beam consists of a defined number of wavelengths which can be shifted by changing the angle of incidence of the white x-ray synchrotron beam. The characteristic far-field pattern is recorded as a function of exit angle and energy. This x-ray optical setup may be used to enhance the intensity of coherent x-ray WG beams since the full energetic acceptance of the WG mode is transmitted.


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