Table 1 Parameters of the focusing mirrors.
From: Nanofocusing of X-ray free-electron laser using wavefront-corrected multilayer focusing mirrors
Focusing direction | Upstream KB mirror | Downstream KB mirror | ||
|---|---|---|---|---|
Vertical | Horizontal | Horizontal | Vertical | |
Coating | None | None | Multilayer | Multilayer |
Average grazing incidence angle (mrad) | 1.50 | 1.50 | 15.2 | 14.1 |
Effective mirror length (mm) | 391.7 | 391.2 | 349.7 | 90.4 |
Focal length relative to mirror centre (m) | 10.10 | 2.70 | 0.320 | 0.070 |
Individual demagnification (Total demagnification) | 17.46 | 65.46 | 247.1 (16175.2) | 1033.9 (18051.9) |
Numerical aperture (×10−3) | 0.029 | 0.109 | 9.96 | 11.88 |
Diffraction limit (nm, FWHM) @9.1 keV | 2061 | 550 | 6.0 | 5.1 |
