Table 1 Optical parameters of developed mirror.
From: Ellipsoidal mirror for two-dimensional 100-nm focusing in hard X-ray region
Parameter | Conditions |
|---|---|
Surface profile | Ellipsoid |
Substrate material | Synthetic fused silica |
Surface coating | Platinum 50 nm |
Mirror substrate size | 100 mm × 50 mm × 30 mm |
Effective mirror dimension: | |
in the meridional focusing direction | 93 mm |
in the sagittal focusing direction | 0.45 mm |
Grazing-incidence angle at the mirror center | 9.0 mrad |
Focal length: | |
light source to mirror center | 50 m |
mirror center to focus | 200 mm |
Semimajor axis | 25.10 m |
Semiminor axis | 28.46 mm |
Spatial acceptance: | |
in the meridional focusing direction | 840 µm |
in the sagittal focusing direction | 450 µm |
Numerical aperture: | |
in the meridional focusing direction | 0.0021 |
in the sagittal focusing direction | 0.0011 |
Diffraction-limited focus size at 7-keV X-ray: | |
in the meridional focusing direction | 37 nm (FWHM) |
in the sagittal focusing direction | 67 nm (FWHM) |
