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|[[File:NeutronPenetrationAir.png|center|200px]]
| style="height:20px; width:400px; text-align:left;" |'''[[Neutron]]s''' have a mean lifetime of around 15 minutes before they decay, so can travel several hundred [[kilometre]]s depending on their [[velocity]] before they [[Radioactive Decay|decay]] into a [[proton]] and a [[Beta Particle|beta particle]] while [[emit]]ting a [[gamma-ray]].
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|[[File:NeutronPenetration.png|center|200px]]
| style="height:20px; width:400px; text-align:left;" |[[Alpha ParticleNeutron Radiation|Alpha particlesNeutron radiation]] can be stopped penetrate paper and sheets of [[metal]] foil but cannot penetrate more than a few cm of [[Lead]] or a [[metre]] of [[concrete]] before they are captured by a thin sheet the [[Atomic Nucleus|nucleus]] of paperan [[atom]].
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====Ionising Potential====
: With a [[Electrical Charge|charge]] of +20 and almost no effect on the [[electron]]s [[Electron Orbital|orbiting]] [[Atomic Nucleus|nuclei]], '''α-particles[[neutron]]s''' are the most not directly [[Ionising Radiation|ionising]] of the three . However, they can either [[Ionising RadiationRadioactive Decay|ionising radiationsdecay]]. It is capable of removing two into a [[electronproton]]s from and a single [[atomBeta Particle|beta particle]] or releasing a [[moleculegamma-ray]] or removing 1 they can be captured by the [[electronnucleus]] from two of an [[atom]]s or causing that to release a [[moleculegamma-ray]]s.
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|[[File:AlphaIoniseNeutronIonise.png|center|600px]]
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| style="height:20px; width:600px; text-align:left;" |When an [[Alpha Particle|α-particle]] interacts with an [[atom]] the [[Alpha Particle|α-particle]] can remove one or two [[electron]]s to '''ionise''' the [[atom]].