If I remember - UV grade fused silica doesn’t filter very much UVA or UVB – that much is true, but can filter maybe 75% of EUV at 55 eV. That would be too much.
It would be worth looking at a spec sheet. The gain in Mills reaction is claimed to be in the range called EUV (extreme UV). From: Marcus Haber Quote: "If you have an intense source of UV in a plasma (as Mills apparently does) then it is possible to use a photocell for conversion, but the plasma will also have a lot of +ions which destroy the photocell. A protective window is impossible since UV is absorbed by the window." Thought about using fused Quartz? http://en.wikipedia.org/wiki/Fused_quartz It doesnt filter UV radiation and should protect the photo cell
