First off, I am currently confused about why neon can even be ionized at all. But since it can be ionized, this is the energy required to give a mole of neon a charge of +8:
207,390,000 joules!! Or ~0.5 GJ! Giving one-fifth of a kilogram of neon the maximum charge would be like the energy from 50 armor-piercing rounds of the ISU-150 assault tank, or approximately one Tour-de-France! Charging up one kilo of neon would be basically either throwing a lightning bolt or melting a tonne of steel.
My question is, what insidious chemical or procedure could rip away all of neon's electrons like that? Or is it just simply impossible to do?
I suspect that it is possible to do (otherwise how would they be able to calculate the energy expenditure), but how is the question.