What Does FEG Stand For?

FEG stands for Field Emission Gun

FEG, or Field Emission Gun, is a type of electron source utilized in electron microscopy and lithography applications. It operates on the principle of field emission, where electrons are extracted from a sharp metallic tip under the influence of a strong electric field. FEGs provide a highly focused and coherent electron beam with minimal divergence, leading to superior resolution and imaging capabilities compared to traditional thermionic sources. Their precision and efficiency make them essential tools in advanced scientific research and nanotechnology.