Gold, 19879Au, undergoes decay to an excited state of 19880g. H the excited state decays by
Question:
Gold, 19879Au, undergoes β – decay to an excited state of 19880g. H the excited state decays by emission of a γ photon with energy 0.412MeV, what is the maximum kinetic energy of the electron emitted in the decay? This maximum occurs when the antineutrino has negligible energy. (The recoil energy of the 19880g nucleus can be ignored. The masses of the neutral atoms in their ground states are 197.968225 u for 19879u and 197.966752 u for 19880g.)
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