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Compton effect

Compton effect

Item no.: P2524415

Experiment Type: Teacher Experiment, Laboratory Experiment

Difficulty Expenditure of Time print
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Principle

When photons are scattered on electrons, their momentum and energy gets changed. The energy of scattered gamma-radiation is measured as a function of the angle of scatter. The Compton wavelength is determined from the measured values.

Tasks

  1. Calibrate the measuring set-up with the aid of a Cs-137 calibrating source (37 kBq) and a Na-22 source (74 kBq).
  2. Measure the energy of the Cs-137 661.6 keV peaks scattered at different angles and calculate the Compton wavelength from the readings taken.

What you can learn about

  • Corpuscle
  • Scattering
  • Compton wavelength
  • g-quanta
  • de Broglie wavelength
  • Klein-Nishina formula