Relationship of Soil Type and Chemicals to the Calibration of Neutron Meters

by John F. Stone, Oklahoma State Univ, United States,

Document Type: Proceeding Paper

Part of: Irrigation and Drainage


Theory of neutron scattering and moderation in matter explains many of the characteristics of calibration curves of neutron moisture probes. Characteristics include effect of atomic species on scattering and absorption of neutrons and concentration and distribution of atoms in the medium, which is the soil and access tube material in our case. Soil characteristics which effect meter calibration include bulk density, bound hydrogen, content of clay minerals and atomic species in the soil solution and affixed to the clay crystal complex of the soil.

Subject Headings: Soil classification | Chemicals | Calibration | Soil water | Clays | Material properties | Chemical properties | Curvature

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