Compare SL alpha, beta and gamma radiation by ionizing ability and penetration, using detector and shielding evidence to identify their behaviour.
An experiment is carried out to determine the count rate, corrected for background radiation, when different thicknesses of copper are placed between a radioactive source and a detector. The graph shows the variation of corrected count rate with copper thickness.
Further results were obtained in this experiment with copper and lead absorbers.
Comment on the radiation detected from this radioactive source.