Comment Bremsstrahlung effect? (Score 2, Interesting) 70
Xrays produced by the Bremsstrahlung effect are proportional to the voltage of free-electrons hitting an atom. That is, a 30kV electron would produce X-ray light with a spectrum centered in 30kV.
Rays have millions of volts and should be expected to produce X-rays of mega-electronvolts energy, this is gamma-ray energy levels.
But Bremsstrahlung needs vacuum, so I probably don't know what I'm talking about.