Automated soil particle size analyzer based on gamma-ray attenuation

2001 ◽  
Vol 31 (3) ◽  
pp. 295-304 ◽  
Author(s):  
J.M. Naime ◽  
C.M.P. Vaz ◽  
A. Macedo
Keyword(s):  
Particle Size ◽  
Gamma Ray ◽  
Soil Particle ◽  
Soil Particle Size ◽  
Particle Size Analyzer ◽  
Gamma Ray Attenuation

Improved Soil Particle-Size Analysis by Gamma-Ray Attenuation

1997 ◽  
Vol 61 (1) ◽  
pp. 23-26 ◽  
Author(s):  
J. C. M. Oliveira ◽  
K. Reichardt ◽  
C. M. P. Vaz ◽  
D. Swartzendruber
Keyword(s):  
Particle Size ◽  
Gamma Ray ◽  
Particle Size Analysis ◽  
Soil Particle ◽  
Size Analysis ◽  
Soil Particle Size ◽  
Gamma Ray Attenuation

SOIL PARTICLE SIZE FRACTIONS DETERMINED BY GAMMA-RAY ATTENUATION

Soil Science ◽  
1999 ◽  
Vol 164 (6) ◽  
pp. 403-410 ◽  
Author(s):  
Carlos Manoel Pedro Vaz ◽  
João de Mendonça Naime ◽  
Álvaro Macedo
Keyword(s):  
Particle Size ◽  
Gamma Ray ◽  
Soil Particle ◽  
Size Fractions ◽  
Particle Size Fractions ◽  
Soil Particle Size ◽  
Gamma Ray Attenuation ◽  
Soil Particle Size Fractions

scholarly journals EXACT EQUATIONS FOR SOIL PARTICLE-SIZE ANALYSIS BY GAMMA-RAY ATTENUATION

1999 ◽  
Vol 56 (1) ◽  
pp. 93-96 ◽  
Author(s):  
Elimoel Abraão Elias ◽  
Osny Oliveira Santos Bacchi ◽  
Klaus Reichardt
Keyword(s):  
Particle Size ◽  
Gamma Ray ◽  
Water Solution ◽  
Mass Attenuation Coefficient ◽  
Particle Size Analysis ◽  
Soil Particle ◽  
Size Analysis ◽  
Soil Particle Size ◽  
Gamma Ray Attenuation ◽  
Approximate Equations

Soil particle-size analysis by gamma-ray attenuation was first suggested in 1992 and improved in 1997 by diminishing the measurement time and adapting it for automation. It is here demonstrated that when the mass attenuation coefficient <FONT FACE="Symbol">m</font>w and the density Dw are replaced by <FONT FACE="Symbol">m</font>s and Ds (where the subscripts w and s stand for water and solution) in the approximate equations used to estimate the concentration of suspended particles, they become exact. The demonstration is based by treating the dispersant and water solution as one single medium, instead of treating them as two media. In this way, six variables are reduced to only three. Physical considerations suggest that the precision in this analysis could be improved if other types of solutions and of photon energies would be used, so that the attenuation by the particles would differ more significantly from the attenuation by the solution.

Comparing multifractal characteristics of soil particle size distributions calculated by Mie and Fraunhofer models from laser diffraction measurements

2021 ◽  
Vol 94 ◽  
pp. 36-48
Author(s):  
María Liliana Darder ◽  
Antonio Paz-González ◽  
Aitor García-Tomillo ◽  
Marcos Lado ◽  
Marcelo German Wilson
Keyword(s):  
Particle Size ◽  
Laser Diffraction ◽  
Soil Particle ◽  
Size Distributions ◽  
Particle Size Distributions ◽  
Soil Particle Size
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