Photonuclear cross-section / Compton scattering cross-section
The radiation of 137Cs and 22Na is measured with a scintillation detector and the energy spectrum determined with a multi channel analyzer. The fractions of the spectra caused by Compton scattering and those caused by the photoelectric effect are determined on the basis of their areas. The results are used for determining the ratio of the effective cross-sections and examining its energy dependence.
Gamma detector
High-voltage connecting cable
PHYWE Multichannel Analyser (MCA)
measure Software multi channel analyser
Tripod base PHYWE
Support rod, stainless steel, 500 mm
Support rod with hole, stainless steel, 10 cm
Spring balance holder
Screened cable, BNC, l = 750 mm
Radioactive source Na-22, 74 kBq
Radioactive source Cs-137, 37 kBq
PHYWE high precision power supply 1.5 kV DC
Right angle clamp expert
- Measurement of the g-spectra of 22Na and 137Cs, using a scintillation detector.
- Determination of the ratio of the specific effective cross-sections due to the Compton effect and the photoelectric effect in photons having energy values of 511, 662 and 1275 keV.
- g-radiation
- Interaction with material
- Photoelectric effect
- Compton effect
- Pair formation
- Detection probability
- Scintillation detectors