Emitted Type of Decay Nuclear Problem Nuclear Transformation Example Particle Nucleus is too big Lose 2 2 and Alpha (α) + → (Z > 84) A–4 Z–2 and Convert neutron into Neutron rich : is proton electron or and Beta (β–) + or β– → too high + → Z+1 Convert proton into Positron Proton rich : is neutron positron or and + or β+ → Emission (β+) too high + → Z–1 Convert proton into neutron by absorbing an Electron Proton rich : is or electron None → Capture (EC) too high → Z–1 or Gamma Nucleus has too Lose energy in the form gamma * + → Emission(γ) much energy of gamma photons photon
Type of Decay Nuclear Problem Nuclear Transformation Emitted Particle Example Alpha (α) Nucleus is too big (Z > 84) Lose 2 and 2 A–4 and Z–2 → + Beta (β–) Neutron rich or : is too high Convert neutron into proton and electron → + Z+1 or β– → + Positron Emission (β+) Proton rich or : is too high Convert proton into neutron and positron → + Z–1 or β+ → + Electron Capture (EC) Proton rich or : is too high Convert proton into neutron by absorbing an electron → Z–1 None → Gamma Emission(γ) Nucleus has too much energy Lose energy in the form of gamma photons or gamma photon * → +
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