The unique Qtac energy analyser design is based on the advanced Calipso technology. At the optimum scattering angle, the analyser has an acceptance over the full azimuth while maintaining a well defined scattering angle.

This, together with parallel energy detection, provides simultaneous high sensitivity and high mass resolution. The possibility of using heavier noble gas ions, which is usually not possible with conventional ion scattering spectrometers, is essential for unambiguous identification of all elements.

The dedicated analyser design allows for non-destructive, reproducible and quantitative analysis of the top atomic layer.