Talk:MetalicaRap
MetalicaRap Design question feed back / discussion. Add your ideas here!
Design Questions
A. Range of achievable spot sizes at target of a Pierce Electron gun running between 100W to 6KW 150KV ? ( given cathode is 1.6m from target max deflection 7 degrees )
B. Possible pit falls of running an SEM at 100W in four-source photometric stereo Ruderford back scatter mode ? ( typical SEM power is 0.1W )
Q:. Target metal surface temperature measurement would be a big advantage, Do you know of a electron bombardment based remote temperature measurement approach?
A1: ???
A2: The bombarded surface gets red-hot, right? Is it possible to put an infrared camera inside the chamber -- or an off-the-shelf webcam with its infrared filter removed -- and calibrate it using some test objects in the chamber heated to a known temperature?
Q: Some EBW machines put the workpiece outside the chamber, in open air. What materials are useful as a "window" -- to pass the electron beam, but hold the air out of the vacuum chamber?
Other ideas.
Q: Printing in air at 1 atmosphere would mess up the metallurgy, but a high vacuum is expensive. What about a low vacuum with a high shield gas percentage?
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