Types of Radiation 0.0 / 5 ? PhysicsRadioactivityParticle physicsNuclear physicsA2/A-levelCCEA Created by: savagej720Created on: 16-05-16 18:54 Alpha (α) Particles It is a Helium Atom Mass Number: 4 Positively Charged (+2e) Air Travel: 4 cm Stopped by Paper Sheet Slow Movement High Momentum Ionises with Interacted Matter (- 100 000 ion-pairs per cm of air) 1 of 3 Beta (β) Particles Fast Electron Relative Atomic Mass: 1/1840 Negatively Charged (-1e) Air Travel: Several Metres Stopped by 5mm of Aluminium Foil Fewer Interactions (comp. α-particles) Great Penetrating Power 2 of 3 Gamma (γ) Waves Short Wavelength (10^-10 to 10^-12) High Frenquency No Mass No Charge Great Penetrating Power Air Travel: Several Metres Effects Reduced by Thick Lead Weakest Ionising Power 3 of 3
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