Alpha Particle Scattering

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  • Created by: roopa
  • Created on: 11-04-15 15:05

Alpha Particle Scattering

The famous experiment performed by Geiger and Marsden, for Rutherford.(http://www.bbc.co.uk/staticarchive/329d4d045b38c4fb2b6b7e00768416def967c377.gif)

  • Alpha particles were fired at a thin sheet of gold foil. 
  • About 99% of the alpha particles went straight through the foil and some were deflected at small angles. This means that most of the atom is empty space
  • However, a very small number of alpha particles were scattered at angles greater than 90 degrees
  • They concluded that this showed the existence of a tiny positive nucleus of size 10^(-15)m
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