Meaning
Surface analysis techniques employ ion beams to induce gamma radiation from light elements within a solid material. While other methods might penetrate deep into the bulk, particle induced gamma emission is primarily sensitive to the surface and near surface layers. This makes it ideal for testing thin coatings.
Elemental Sensitivity
Proton bombardment triggers nuclear reactions that release characteristic gamma rays from elements such as fluorine and lithium. During particle induced gamma emission, the energy of the emitted photons identifies the specific atoms present in the polymer. The intensity of the signal correlates to the concentration of the element.
Measurement Speed
Rapid data acquisition allows for the screening of multiple samples in a short timeframe. Because particle induced gamma emission does not require extensive sample preparation or vacuum environments for every material type, it can be used for high volume production audits. This efficiency supports real time monitoring of surface modifications.
Analytical Boundary
Detection limits vary depending on the background radiation and the density of the polymer matrix. While the technique is highly effective for light elements, its sensitivity decreases for heavier atoms where other ion beam methods are more appropriate. The depth of the analysis is limited to the first few micrometres of the material, which ensures the bulk properties of the moulded part remain unaltered during the testing phase.
