@ Tim1 “there are […] technology”. You have a point. All the same, I still guess berillium may heavily affect the attractiveness of future Plasma Focus reactors, as both safety and financial breakdown are at stake. I mean, it comes to me an old Donald Duck story, where the hero used to drive an amazing oil-free Ferrari-like car, whose only weak point was the fuel cost: 1 billion US$ / Km…
