In scanning electron microscopy, a thermionic electron source such as a tungsten filament is usually used. The subject of this tutorial, the Hitachi S-4700 FE-SEM, utilizes a cold cathode field ...

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The SEM sprang to life and gave [Macona ... which is more than [Macona] wanted to spend. It turns out filaments can be built at home. A bit of .089mm tungsten wire and a spot welder were all ...

Coxem’s EM-30 Series is an ideal, compact SEM, and the companion models of the EM-30AX Series ... electron microscopes are the only ones provided with either CeB 6 or tungsten electron sources. Other ...