Symmetry is fitted with 5 discrete forescatter detector (FSD) diodes, providing flexible imaging independent of the EBSD detector. All diodes are angled towards the sample for maximum signal detection:

Backscatter position - 2 diodes above screen for optimised atomic number contrast imaging

Forescatter position - 3 diodes below screen for optimised orientation contrast imaging (with false-colour imaging) and topographic contrast. In addition, these diodes provide transmitted darkfield images of electron transparent samples mounted for transmission Kikuchi diffraction (TKD).

Speed - adjustable exposure time providing high quality imaging at more than 106 points per second

2 a

Colour FSD image of a duplex steel. Field of view is 150 μm across.

2 b

Schematic showing Symmetry’s 5 discrete FSD diodes