Ivy Matt wrote: Proton-boron fusion begins to occur at an appreciable rate at about 100-150 keV ion energy. Optimum energies for proton-boron fusion are about 100-600 keV. Each reaction produces a total of 8.7 MeV of kinetic energy distributed among the three alpha particles. The extra energy comes from the conversion of mass to energy, as in Einstein’s famous equation.
(H1) 1.00794u + (B11) 11.0099u = 12.01784u
3 * (He4) 4.002602u = 12.0078064
12.01784u – 12.0078064u = 0.0100336u is converted to energy.