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Radioactive Particle
Particles emitted from nuclei as a result of nuclear instability, including alpha particles, beta particles, and gamma rays.
Penetrating Power
The ability of a form of radiation to pass through material, depending on the type of radiation and the material's characteristics.
Ionizing Radiation
Radiation with enough energy to remove tightly bound electrons from atoms, thus creating ions and causing molecular damage.
Alpha Decay
A type of radioactive decay in which an atomic nucleus emits an alpha particle (two protons and two neutrons bound together) and transforms into a different element.
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