Lightsabres are a incredibly powerful sword, requiring a massive amout just to work, but what is really interesting is the blade. (Your teachers lied to you) there are the Stages of Matter, Water, Ice, and Gas, but your teachers didn't tell you about the FOURTH Stage of Matter, PLASMA. Plasma is when the molecules move faster then the Gas does, and is incredibly hard to contain, hence a Magnetic Field. Plasma Torches use a Magnetic Field to contain the Plasma, and a Lightsabre uses the same construction, but on a much powerful scale. In fact, they require so much power that the first versions of a Lightsabre actually had wires that went from the Lighsabre to a Battery Pack on the Jedi's Belt. LITTLE KNOWN FACT, on of Luke's Late (dead) Apprentices from before the events of Star Wars TFA used thist type, I know, he was like a Hipster "ugh, so advanced Lightsabre, like Old School is the way to go, for the win".m(that's the Lighsabre in a Nutshell)
So now that's out of the way, my theory is that they could in fact EXSIST in the Fallout Lore. Considering we have Fusion Cores, which can power our Power for quite a long time, I'm thinking they can power a Lightsabre the same way.
I want people's opinion on this (and maybe a mod that puts them in with the Fusion Core idea), are they possible?