Research Article
Gamma-Ray Attenuation to Evaluate Soil Porosity: An Analysis of Methods
Figure 2
Schematic diagram of the gamma-ray attenuation equipment. (1) Radioactive source; (2) Pb circular collimators; (3) Pb shields; (4) NaI(Tl) detector; (5) table of measurement; (6) sample; (7) position () of the experimental measurements.