High-efficiency coherence-preserving harmonic rejection with crystal optics.

ABSTRACT: This work reports a harmonic-rejection scheme based on the combination of Si(111) monochromator and Si(220) harmonic-rejection crystal optics. This approach is of importance to a wide range of X-ray applications in all three major branches of modern X-ray science (scattering, spectroscopy, imaging) based at major facilities, and especially relevant to the capabilities offered by the new diffraction-limited storage rings. It was demonstrated both theoretically and experimentally that, when used with a synchrotron undulator source over a broad range of X-ray energies of interest, the harmonic-rejection crystals transmit the incident harmonic X-rays on the order of 10^-6. Considering the flux ratio of fundamental and harmonic X-rays in the incident beam, this scheme achieves a total

SUBMITTER: Zhang F 

PROVIDER: S-EPMC6242334 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature