This is my ThF 4 + LaFe (α-Fe) Nuclear Holdrum ( more than quantic-one ), for it's hard-state design. It's the revealed reproduction from 1980, after seeing the images with my tiny eyes from M.Villeneuve having a snapshoot from the Psychiatric hives, or vault. It was forbidden to stole because it was not yet made at this moment... To reproduce the image on the picture, they use white paint on the Xenon tube on external side of the holdrum... In fact this is PTFE thread used and it have it's property... Ionisation from PTFE thread is mildly-helper driving photo-source like filter-to-filter of a « ridicule » quater-plate effect side of using Fluor in light filtering, while in high-energy and high velocity light it en-lighting prior to filter... In This case it's good, we are dealing with Ultra-violet led PaInSe ( also know as Hard-state gamma-ray pulse led from Praseodymium/Indium with filter to throw down wavelength to UV region... ). I can conclude it's 5 xeno...
For related purposes, some essay, some near-future even described... and some tech composition.