Gammadensimeter
Gammadensimetry is a Mmasurement technique of soil density and moisture, particularly in agriculture and public works. These devices operate with two sealed radioactive sources emitting gamma rays and neutrons, gamma radiation from Cesium 137 (Cs 137) are used for measurements of density and neutron radiation emitted by the source Americium 241-Beryllium (Am 241 - Be) are used for measuring humidity.
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