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What is the most penetrating kind of radiation product that can be shielded with aluminum foil? alpha particles beta particles gamma rays high-energy photons
The answer is beta particles. A beta particle is a positron or electron that is released at very high speed and energy from a nuclear decay reaction. Alpha particles are much heavier being composed of two protons and two neutrons bound together (a helium particle). The reason beta particles are able to be stopped by a thin foil of aluminum foil is because they are charged particles hence interact (electromagnetically) more with matter than other types of radiations. This is also why beta particles have a range of approximately one metre in air, a distance also dependent on the particle energy.
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