Singapore Synchrotron Light Source
Makes Light Work For You
PCIT: Phase Contrast Imaging and Tomography
Contact person: Dr. Krzysztof Banas (slskb
nus.edu.sg)
Contact person: Userdesk (slsuserdesknus.edu.sg)
|
X-Ray Fluorescence (XRF) method is widely used to measure the elemental composition of materials. Atoms in the sample are excited and emit characteristic X-ray photons.
|
Experimental setup used for X-ray Fluorescence experiment
| Detector | Amptek XR 100 CR Si-PIN Photodiode |
| Detector size | 7 mm2 |
| Silicon thickness | 300 µm |
| Energy Resolution | 215 eV FWHM @ 5.9 keV |
| Background Counts | <3 x 10-3/s, 2 keV to 150 keV for 7 mm2/300 µm detector |
| Detector Be window thickness | 0.5 mil (12.5 µm) |
| Power supply and amplifier | Amptek PX2T/CR |
How do the x-ray spectra look?
Typical X-Ray fluorescence spectrum
XRF features:
♦instrumental analytical technique -multi-element capability,
♦elemental analysis of solids and liquids,
♦minimal sample treatment,
♦concentration range: ppm to %,
♦element range: from S to Se (K-lines) and from Mo to Bi (L-lines).
XRF application areas:
♦materials research,♦geology and geochemistry,
♦environmental analysis,
♦mining and exploration,
♦archaeology,
♦industrial process control (metallurgy, cement, glass, industry),
♦forensic science,
♦...
Element range
