Three kinds of particle emission

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Presentation transcript:

Three kinds of particle emission Type of particle Alpha Particle Beta Particle Gamma Particle Composition 2 protons and 2 neutrons (helium nucleus) Electron Electromagnetic radiation Charge positive negative No charge

Which one is most massive among the three radioactive particles?

Effects of Electric Field

Effects of Magnetic Field

Three kinds of particle emission Type of particle Alpha Particle Beta Particle Gamma Particle Penetration Power Paper Aluminum sheet Lead

Mechanism of Alpha Decay A helium nucleus is emitted A-2, Z-4

Mechanism of Beta Decay Electron is emitted A neutron becomes a proton Z is unchanged, A+1

Mechanism of Gamma Decay A nucleus gets excited Due to an energetic collision Immediately following a radioactive decay A and Z of the element does not change

Nuclear Processes Fission Heavy atoms are split and release energy

Nuclear Processes Fusion Lighter atoms combine to make heavier atoms and release energy

Nuclear Processes Mass is conserved. Energy is conserved.