
TY  - JOUR
A1  - C&aacute;ssaro, F. A. M. 
A1  - Tominaga, T. T. 
A1  - Bacchi, O. O. S. 
A1  - Reichardt, K. 
A1  - Oliveira, J. C. M. 
A1  - Timm, L. C. 
T1  - Improved laboratory calibration of a single-probe surface gamma-neutron gauge
JF  - Soil Research
JO  - Soil Res.
Y1  - 2000
VL  - 38
IS  - 5
SP  - 937
EP  - 946
KW  - gamma-ray attenuation, backscatter, soil bulk density.
UR  - https://doi.org/10.1071/SR99107 
N2  - Surface gamma-neutron gauges are extensively used for the determination of soil physical properties such as density. Substantial differences are sometimes observed between density values provided by these gauges when using factory-supplied calibrations and gravimetric density measurements. These differences can be as high as 16%. In this paper it is shown that, using homogeneous materials with different known densities covering a wider range, it is possible to find a better calibration equation. This calibration provides density values in agreement with gravimetric measurements. 
ER  -

