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.

Nano-Beam X-Ray Absorption Mapping (2D n-XAS)

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

 

Nano-Beam X-Ray Absorption Mapping (2D n-XAS)

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.

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