Theoretically all fusion reactors produce net energy…
Since most of the reactor designs are intended for converting fusion energy into heat, one could theoretically say that all the input energy is also converted to heat, so if you input one 1MW to get one watt out, you could theoretically recover 1,000,001 watt, ergo a Q of 1.000001, however the conversion of thermal energy to useful electric power is at best 60%, so we go back to the drawing board.
Clearly a fusion scheme that takes advantage of direct charge to current conversion will have a huge advantage. Focus fusion promises to do this, as well as my soon to come FICS fusion.
Steven
