Sure we all know it happens at the core of the Sun, but the half life for a proton there is a billion years because p + p -> D + e + v is so unlikely A thermonuke bomb using light H would give no extra energy at all above the fission primary. Even the Sun only gives a few watts for bomb sized volumes and a bomb only has fractions of a millisecond, so you'd get millijoules even at Sun densities. Perhaps a bomb gets hotter than the Sun but not by more than an order of magnitude. You see the problem. D and T fusion are trivial. Protium fusion is so hard that I wonder if it's ever been experimentally demo'd in any way. I have looked but can find only theory. Anybody got a ref for an experiment? This is one you all assumed and me too. But maybe not.