Nice ion burn

[nasadowsk]

I had a Zenith with a spot burnt right through in the center, where the turn-off dot generally is.

I had a rotted tube in a tek scope once that I pinned the brightness on and XY drew by burning off the phosphor. I wasn't the first one to try that 'experiment' on it, either. Tek sold a kit to internally limit the brightness, for just such a reason...

I wonder where the stuff goes, after that, though?