The ARM 1250 was designed to maximize image resolution through the use of a high accelerating voltage. It has a LaB6 source that can be operated at an accelerating voltage of up to 1250 kV. The large size of the components required to support this voltage mean this TEM takes up two storeys, which is a factor in the rarity of instruments with this design. This TEM is suitable for in-situ experiments with a video system installed and an incorporated drift-correction system. Moderate tilt angles are possible and heating and cooling holders are compatible.

Gun LaB6
Image resolution 0.12 nm
Energy resolution
Tilt angles 30°/30°
Heating holder 900°C
Cooling holder -160°C
Other holders
Energy filter Gatan GIF
EDX system

TEM Comparison Table

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