Quote:
Originally Posted by Mike. Watterson
Presumably because the electron collisions is what ages the phosphor, not the brightness per collision.
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The perceived wisdom is that damage to the phosphor is caused by ions created by the electron beam, not electron bombardment. That might agree with the beam current versus particle energy explanation quite nicely. Ion creation is not so much dependant on electron energy as the number of electrons that hit residual gas molecules. So if you aim for higher electron energy but fewer electrons then fewer ions get created.
Might be something I could play with in my high vacuum chamber...
C