Quote:
Originally Posted by bandersen
I've read that electrostatic fields deflect the ions along with the electrons. So the ions are spread evenly over the screen rather than bombarding a circle in the middle. Eventually the screens do get dimmer but it takes a while.
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Ions being vastly heavier than electrons would make them (ions) harder to deflect, causing them to hit nearer center of the screen. Seems like, anyhow.
The principle of the ion trap itself is the easier deflectability of electrons vs. ions ("winnowing").