Particle Physics summary

Particle Physics summary

1. Structure of an atom

   • Particles
     • Electrons
       • Charge -1 ,Mass of u/1840, Outer shells
     • Protons
       • Charge +!, mass of U ,nucleon
     • neutrons
       • Charge .0 ,mass of U , nucleon

2. Radioactive decay

   • Particles emitted
     • Alpha
       • Helum atom
         • mass number 4 proton number 2
       • Positively charged 2e
     • Beta
       • High speed Electon
       • more than 0.99c
       • Realeases
         • Neutranos
         • Anti-neutranos
   • Gamma radiation
   • In any reaction
     • mass
       • All conserved
     • charge
     • proton number