X-Ray Optical Beamline Design Principles
Beamline optics, as in the familiar visible part of the electromagnetic spectrum, have the dual functions of conditioning the beam quality and delivering photons with the necessary divergence and spatial extent at the sample from the source. In practice, the source characteristics are usually given and the specimen requirements are a variable from one experiment to another. Often, geometrical beamline optimization is simply not possible for a range of sample geometries so that specialized designs must evolve. Apart from the obvious parameter, flux, photon beams have a number of electromagnetic attributes such as energy (or wavelength), energy bandwidth (or monochromaticity), polarization state and time structure. All must be controlled to a degree determined by the experimental needs in the beamline.
KeywordsSynchrotron Radiation Method Phys Storage Ring Critical Angle Bragg Reflection
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