Nano-Beam X-Ray Absorption Mapping (2D n-XAS)
This valence electron distribution is coming from NEXAFS 2D scanning with a 80nm nano focusing X-ray @TPS-21A.
2-D Absorption Image - Energy Shift of Ni-element
|
Experimental Details |
|
|
Item |
Value |
|
Sample |
NCM materials (foil) |
|
Scan Size (μm) |
3.5 x 3.5 |
|
Target Element |
Ni K-edge, 8333 eV |
|
Scan Step (μm) |
0.5 |
|
Spectra Energy Step (eV) |
0.3 |
|
Spectrum Range (eV) |
8325 ~ 8365 |
This image shows that the near-edge absorption is non-uniform, which the valence number of Ni can be identified as being between 0 and 1.