The discussion centers on sourcing small electron guns for vacuum applications, specifically highlighting the limitations of using TV CRT guns due to filament degradation when exposed to atmosphere. The primary supplier mentioned is Kimball Physics, known for more advanced electron guns that may exceed a budget of $500. Users are encouraged to explore online search results for potential alternatives, emphasizing the need for devices that can operate effectively under vacuum conditions.
PREREQUISITESElectronics hobbyists, researchers in physics, and engineers working with vacuum systems who require reliable electron gun solutions.
AuroraIndust said:Does anyone know of a good source for small electron guns? Just a simple one. I was using a TV CRT gun but the filaments don't last when exposed to atmosphere. I obviously operate under vacuum but I have no way to store my device in a vacuum for a long period.