XR Back Scattering is an underlying phenomenon of fluorescence and is usually considered as a rumour in the XRF spectrographic sorting analysis. Instead of being represented by a few high intensity peaks of specific energies, it is characterised by a continuous distribution of low intensity photons, the distribution profiles of which are characteristic of the presence of the various metals.
XRF-BS can identify metal concentrations down to 0.2% which makes it a performing solution for sorting the different aluminium alloys. So what are the main benefits of XRF-BS versus LIBS?
- Deeper analysis results in better performance in case of critical material surfaces (paint, dirt, etc.).
- Higher accuracy due to continuous analysis vs LIBS discontinuous spot micro analysis.
- Continuous analysis makes sorting independent from the shape of pieces.
