Electron absorption
The attenuation of an electron particle stream passing through a material layer depends both on the thickness of the layer and on the mass coverage, resp. the “mass per unit area”. It will be shown that the particle flux consisting of electrons of a particular energy distribution decreases with the “mass per unit area”. As electron source, a radioactive sample of 90Sr is used.
Geiger-Mueller counter tube, type B, BNC cable 50 cm
Absorption plates for beta rays
Base plate for radioactivity
Supports f. base 09200-00, 2 pcs
Counter tube holder on fixating magnet
Source holder on fixing magnet
Plate holder on fixing magnet
Cover glasses 22×40 mm, 100 p.
Vernier calliper stainless steel 0-160 mm, 1/20
Stopwatch, digital, 1/100 s
Radioactive source Sr-90, 74 kBq
PHYWE Geiger-Müller Counter
- The beta-counting rates are measured as a function of the absorber thickness using different absorbing materials such as aluminium (AL), glass (GL), hard paper (HP) and typing paper (TP).
- The attenuation coefficients are evaluated for the four absorbing materials and plotted as a function of the density
- Density
- Counter tube
- Radioactive decay
- Attenuation coefficient
- Mass coverage