How are gamma rays produced by nuclear fusion?

Fusion reactions such as D(p,g)He-3, D(d,g)He-4, and T(d,g)He-5 produce gamma radiation directly (without an intermediate excited nucleus) by radiative capture. These reactions compete with the much more common neutron- and charged-particle-producing reactions between these species. read more

Gamma-rays are produced primarily by four different nuclear reactions: fusion, fission, alpha decay and gamma decay. Nuclear fusion is the reaction that powers the sun and stars. It occurs in a multistep process in which four protons, or hydrogen nuclei, are forced under extreme temperature and pressure to fuse into a helium nucleus, which comprises two protons and two neutrons. read more

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. read more

Notable artificial sources of gamma rays include fission, such as occurs in nuclear reactors, as well as high energy physics experiments, such as neutral pion decay and nuclear fusion. A sample of gamma ray-emitting material that is used for irradiating or imaging is known as a gamma source. read more