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The half life on tritium for h bombs is only 12 years, so those components need to be replaced periodically.
H bombs don't use tritium for their main fusion stage. Even Castle Bravo used Lithium-6. Tritium was used in initiators to increase neutron flux and as a fission booster for dial a yield (once again, to increase neutron flux). Both of those are just as important for fission weapons as they are for fusion.
Importantly, alpha decay creates helium pockets which is a neutron moderator and screws up the bomb.
And Lithium-7 accidentally. They didn't realize that the Lithium-7 would produce a fuckton more tritium, which is how a 4-6 Megaton estimated yeild became a 15 Megaton actual yeild, causing us to basically nuke our own civilians and some Japanese civilian sailors.
Yeah, they thought lithium-7 was just junk that was left over because they couldn't completely do isotope separation yet. Whoopsie daisy, looks like we irradiated a whole shitton of sodium and blew it all over the place along with our fission products from more completely fissioning the uranium tamper.
Incidentally that's why Russia's nuclear torpedo was called a radiological weapon. It wasn't necessarily salted with cobalt, just the seawater is salted enough that when you neutron activate it you get a very nasty short lived gamma emitter that'll ruin your day if you get sprayed with it just as much as any fission product.
See test Baker from Operation Crossroads, which wasn't even a damn fusion bomb. They kept the sailors trying to clean the ships with goddamn radioactive water. https://en.m.wikipedia.org/wiki/Operation_Crossroads#Induced_radioactivity
On the one hand, yeah, more civilians need to know about this shit.
On the other hand, we really don't need civilians knowing how to do this shit once we finally overthrow the vampires that are in control. Seriously. Dragons would have stopped extracting shit before now, even Adam Smith would have... I dunno what's going on at this point.