Lots of articles and papers I read talk about the gamma rays produced during fusion reactions. And yet, when I look at equations for fuel cycles, the sum of the energies of the fusion products equals the total energy liberated. Since this implies that all of the energy released in the fusion reaction is in the form of kinetic energy carried by the reaction products, where do gamma rays fit in? Are they produced afterward, as syncrotron or bremsstrahlung radiation? Either way, does anyone know how much energy is carried as gamma rays for various fuel cycles, or can point me to a website that does? I'm especially interested in the 3He-3He cycle. Thanks.