In scanning electron microscopy, a thermionic electron source such as a tungsten filament is usually used ... Because of the microscopic size of the electron source, the beam produced by this emitter ...

There are hackers who have soldering setups on the dining room table, and then there are hackers who have scanning electron ... out filaments can be built at home. A bit of .089mm tungsten wire ...

Scientists have created an ultrashort electron beam with ... In astrophysics, for example, this beam can be directed to a ...

COXEM’s EM-30 series tabletop scanning electron microscope is the only ... While the operating cost of tungsten filament sources is low, a CeB 6 source offers a brighter image at low kV beam ...

Coxem’s EM-30 series of tabletop scanning electron microscopes are the ... Although the operating cost of tungsten filament sources is low, a CeB 6 source provides a brighter image at low kV beam ...