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Law of distance and absorption of gamma or beta rays with GM Counter
Principle: The inverse square law of distance is demonstrated with the gamma radiation from a 60Co preparation, the half-value thickness and absorption coefficient of various materials determined with the narrow beam system and the corresponding mass attenuation coefficient calculated.
Tasks:
1. To measure the impulse counting rate as a function of the distance between the source and the counter tube.
2. To determine the half-value thickness d1/2 and the absorption coefficient of a number of materials by measuring the impulse counting rate as a function of the thickness of the irradiated material. Lead, iron, aluminium, concrete and Plexiglas are used as absorbers.
3. To calculate the mass attenuation coefficient from the measured values.
| Artikel-Nr. | Artikelbezeichnung |
|---|---|
| P2524101 | Law of distance and absorption of gamma or beta rays with GM Counter |
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