The unique and demanding requirements on mirrors for use in synchrotron-radiation beams are discussed in the light of recent experience with current mirror technology. The crucial role played by optical scattering from real mirror surfaces is discussed along with scattering and roughness measurement results on available mirrors. Mirror-cooling requirements and implications are reviewed. The prospects for future mirrors with smoother substrates, larger sizes, greater stability against spontaneous or thermally generated distortions, and more complex optical figures are discussed as well.
Vernon O. Jones,
"Vacuum Ultraviolet (VUV) And Soft X-Ray Mirrors For Synchrotron Radiation," Optical Engineering 17(5), 175504 (1 October 1978). https://doi.org/10.1117/12.7972270