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1 Ionizing Radiation 1. Alpha particles α 2. Beta particles β 3. Gamma rays γ Ionizing Radiation 1. Alpha particles α The helium nucleus 2. Beta particles β β - β + 3. Gamma rays γ γ rays are high energy photons similar to X-rays Ionizing Radiation Other particles: Neutrons (fast and slow) Neutrinos and antineutrinos Radiation and Radioactivity Definitions: 1. Radioactivity -- 2. Radioactive decay or disintegration -- 3. Nuclide -- Radiation and Radioactivity Definitions: 1. Radioactivity -- The spontaneous emission of radiation from disintegration of unstable atomic nuclei or nuclear reaction. 2. Radioactive decay or disintegration -- The changing of the nucleus into another, resulting in the emission of radiation. 14 C --> 14 N + β - 3. Nuclide -- A nuclear species characterized by its composition of protons and neutrons. N has 7 protons 13 N has 6 neutrons and is radioactive 14 N has 7 neutrons and is stable 15 N has 8 neutrons and is stable C has 6 protons 12 C has 6 neutrons and is stable 13 C has 7 neutrons and is stable 14 C has 8 neutrons and is radioactive
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