Experimental Station

The SUT-NANOTEC-SLRI XAS Experimental Station is designed to accommodate a wide variety of samples, focusing on determining local atomic structures and oxidation states.

Standard Setup:

Sample Stage: A versatile mounting stage adaptable for standard holders or specialized in-situ chambers.
Detection Systems:
- Transmission Mode: Uses Ionization Chambers placed before (I₀) and after (I₁) the sample to measure X-ray flux absorption. This is ideal for concentrated samples.
- Fluorescence Mode: Uses a 4-element Silicon Drift Detector (SDD) placed perpendicular to the beam path. This high-sensitivity detector is optimized for dilute samples or thin films.

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Figure 3: Schematic of SUT-NANOTEC-SLRI beamline station (BL5.2)

Experiment mode

Transmission

Detector: 10mm and 40mm Ionization chamber
Beam size at sample: 13 mm (width) x 1 mm (height)

Fluorescence

4-element Silicon Drift Detector (SDD)
- Model: Vortex-ME4 (Model number 267-VTX-ME4)
- Detector sensitive thickness: 0.5 mm
- Detector active area: 50 mm² each, 200 mm² total
Beam size at sample: 20 mm (width) x 1 mm (height)

Absorption Edge Available at BL5.2

Figure 4: Absorption edges that can be measured at BL5.2