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Technical data


Photonuclear cross-section / Compton scattering cross-section

Article no: P2524615

Principle

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.

Tasks

  1. Measurement of the g-spectra of 22Na and 137Cs, using a scintillation detector.
  2. 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.

 

Learning objectives

  • g-radiation
  • Interaction with material
  • Photoelectric effect
  • Compton effect
  • Pair formation
  • Detection probability
  • Scintillation detectors

Scope of delivery

PHYWE Multichannel Analyser (MCA) 13727-99 1
measure Software multi channel analyser 14452-61 1
Radioactive source Cs-137, 37 kBq 09096-01 1
Gamma detector 09101-00 1
PHYWE High precision power supply 1.5 kV DC 09107-99 1
High-voltage connecting cable 09101-10 1
Stand rods, stainless steel, various sizes 02032-00 1
Right angle clamp expert with fulcrum screw 02054-00 2
Tripod base PHYWE 02002-55 1
Screened cable, BNC, l = 1 m 07542-11 1
Support rod with hole, stainless steel, 10 cm 02036-01 1
Spring balance holder 03065-20 1

PHYWE Systeme GmbH & Co. KG
Robert-Bosch-Breite 10 – 37079 Göttingen – Germany
www.phywe.com