White cast iron color FSE image
FSE image of a damascene steel showing a perlitic structure.
Each of the three ARGUS™ FSE detectors positioned below the phosphor screen captures a different part of the highly anisotropic diffracted forescattered signal (Kikuchi pattern). This allows the ARGUS™ system to detect the slightest signal variation, due to orientation change when scanning over a polycrystalline sample. Using color coding (RGB) to display the signal, even very small orientation changes are made visible for the human eye. This feature is unique to the ARGUS™ system. (For more details on the technique please refer to A. P. Day et al., Journal of Microscopy, Vol. 195, Pt. 3, September 1999, pp. 186–196.)
Signal optimization is fast and fully automatic thanks to its complete integration into the ESPRIT software. Also the FSE signal can be combined with the BSE signal.
ARGUS™ images have both scientific and practical applications.