-----Original Message----- From: [email protected] >> When a gamma reaction is known to happen with the same reactant, how can that reaction be excluded from happening, in a new scenario when both reactions are given enough energy to overcome the fusion threshold? Especially if one (the desired reaction) is much rarer than the other?
> In Ed's scenario, this may be possible. Namely, if sufficient mass is lost before the reaction occurs, such that there is insufficient remaining to form a positron. Hi, That seems unlikely. Slight mass can perhaps be lost in ground state collapse, but not enough. You say "mass loss before the p-e-p reaction occurs" and the positron, which must be avoided - has .511 MeV so that means the energy radiated by ground state collapse cannot derive from the electron, so how is it lost from the proton? What mechanism is involved? Jones

