Thanks Derek, but I did the calculation provided by jamesr and the result is closer to the 8.7 MeV provided by wikipedia:
http://en.wikipedia.org/wiki/Aneutronic_fusion
http://www.wolframalpha.com/input/?i=mass+of+proton+++mass+of+Boron-11+-+mass+of+Beryllium-8+-++mass+of+Helium-4
The result is 8.07 MeV
The decay of beryllium 8 to helium – 4 gives ( http://www.wolframalpha.com/input/?i=mass+of+Beryllium-8+-+mass+of+Helium-4+-+mass+of+Helium-4+)
0.09 MeV
The total is 8.16MeV
There are still 0.540MeV missing…
Maybe there’s a rounding error? Or are there still decay chains missing?
