Compton effect
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.
Lead brick with hole
Lead block, 200x100x50 mm
Gamma detector
High-voltage connecting cable
Screening cylinder for gamma detector
Rod, iron, d 25 mm, l 200 mm
Source holder on fixing magnet
PHYWE Multichannel Analyser (MCA)
measure Software multi channel analyser
Screened cable, BNC, l = 750 mm
Radioactive source Na-22, 74 kBq
Radioactive source Cs-137, 37 kBq
Radioactive source Cs-137, 18.5 MBq
PHYWE high precision power supply 1.5 kV DC
- Calibrate the measuring set-up with the aid of a Cs-137 calibrating source (37 kBq) and a Na-22 source (74 kBq).
- Measure the energy of the Cs-137 661.6 keV peaks scattered at different angles and calculate the Compton wavelength from the readings taken.
- Corpuscle
- Scattering
- Compton wavelength
- g-quanta
- de Broglie wavelength
- Klein-Nishina formula