Microprobe Endstation
The microprobe endstation operates under vacuum and is specifically tailored for applications requiring the challenging medium-energy range of 2-4 keV. This endstation utilizes a pair of Kirkpatrick-Baez (K-B) mirrors to focus the collimated beam to a spot size of 10 µm × 10 µm for mapping experiments. A high-resolution and large-area CCD camera is equipped to obtain an optical image of the sample. Micro-XAS can also be performed on specific spots using the microprobe.
Capabilities
- Vacuum compatible
- 20 cm long mirror
- 0.15 × 0.15 mrad²
- 10 × 10 µm² beam
- C/Pt bi-layer coating
- 30 cm working distance
- 7-element Si drift detector
- mapping in fluorescence and TEY mode
- micro-XANES
Samples
- Thin layer
- Films
- Powders
- Potential application: imaging of geological and biological samples at ~10 µm
Schematic
Specifications
| Source | Bending Magnet |
|---|---|
| Energy Range (keV) | 1.7 - 10 |
| Wavelength (Å) | 7.3 - 1.3 |
| Resolution ΔE/E @ E InSb (111) | 3.3 × 10⁻⁴ |
| Resolution ΔE/E @ E Si (111) | 1.0 × 10⁻⁴ |
| Flux (g/s/0.1%BW) @ 100 mA | 1.0 × 10⁹ |
| Spot Size (V × H) | ~10 µm × 10 µm |
| Focusing | K-B Mirror Pair |
