What are the characteristics of alpha, beta and gamma radiation?
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Gamma Rays
Property α ray β ray
Nature Positive charged particles, 2He 4 nucleus Negatively charged particles (electrons).
Charge +2e –e
Mass 6.6466 × 10–27 kg 9.109 × 10–31 kg
Range ~10 cm in air, can be stopped by 1mm of Aluminium Upto a few m in air, can be stopped by a thin layer of Aluminium
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