- #1
emtae55
- 24
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- TL;DR Summary
- I made electron gun by myself with W filament, but the filament was burned :(
I'm in a project that make electron gun myself. I made acryl cylinder for the body and used W(tungsten) filament that using in real SEM. I made the body vaccum(about 11kPa), and applied voltage to the filament(about 6V). Then, the filament started to be heated. But problem was appeared. I didn't change the voltage and current, but the intensity of light of filament went increased by itself, and then it was burned and the electron gun was broken down.
How can i solve this problem??
How can i solve this problem??