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*Common in heavy [[element]]s like [[uranium]] and [[radium]].
*[[Alpha Particle|Alpha particles]] have low [[Penetration Depth|penetration depth]] but high ionizing power.
*[[Alpha Decay|Alpha decay]] is a form of [[spontaneous fission]].
The emitted [[alpha particle]] is a [[helium]] [[Atomic Nucleus|nucleus]] (He²⁺).
*[[Alpha Decay|Alpha decay]] results in a daughter [[Atomic Nucleus|nucleus]] that is more stable than the parent.
The [[energy]] released during [[alpha decay]] is in the range of 4-9 MeV.
*[[Alpha Decay|Alpha decay]] can be detected using [[Geiger-Müller]] counters or [[scintillation]] detectors.
===Examples===