ARM2™ STEM Detector

ARM2™ STEM detector

The Deben Solid state Gen5™ SEM detector is modular, with the motorised ARM2™ mechanical interface at the heart of the system. Also included are Gen5™ electronics and software GUI, as well as various diode options available for both STEM and BSE imaging. ARM2™ can be adapted to most conventional SEMs having a free chamber port at 90° to the beam axis. Control of diode segments and brightness/contrast is from within the software GUI, with up to three simultaneous video channels available (optional).

A retractable PN diode semiconductor STEM detector configured with four Dark Field (DF) diodes wired as two pairs and a single Bright Field (BF) diode. The system may be operated in BF mode, DF mode or DF Phase Contrast mode along with mixing between segments, DF+BF for example.

Twelve 3mm grids can be fitted to the standard STEM grid holder, allowing multiple specimen analysis. A retractable arm complete with Deben Gen5 electronics allows the STEM Detector to be used with any SEM with a free chamber port and AUX video input. The 12 position grid holder is airlock compatible and supplied complete with stage dovetail/sledge as required.

The STEM detector assembly uses a single Bright Field and 4 element Dark Field diode. Such is the performance of this design that it has proved equally successful fitted to both FEG and Tungsten SEMs. The STEM detector assembly inserts below the grid holder and has X,Y, Z position adjustment. Dark field diodes are configured so they can operate in full Dark Field or Dark Field Phase Contrast mode.

Deben Gen5 electronics is configured with four input channels and a single video output channel (optional two or three simultaneous video outputs).