[jackbill]

but it always required more energy to be put into it than could be taken out, which is defeating the point a bit.

Classic understatement.

[FastCoyote]

This should be a 1000 post thread by now if this is true. In essence, an unlimited energy source.

Of course, te niggling question is what the cost of deuterium is, and whether deuterium as well as tritium can be generated