Open AccessCALCULATION OF RADON DIFFUSION COFFICIENT AND DIFFUSION LENGTH IN SOME SOILS TYPES
Author(s) -
Ali eta l.
Publication year - 2018
Publication title -
iraqi journal of agricultural science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.232
H-Index - 7
eISSN - 2410-0862
pISSN - 0075-0530
DOI - 10.36103/ijas.v49i6.147
Subject(s) - humidity , diffusion , radon , effective diffusion coefficient , soil science , chemistry , environmental science , materials science , thermodynamics , physics , nuclear physics , medicine , magnetic resonance imaging , radiology
In this study, the effect of humidity on the diffusion coefficient of radon gas and the diffusion length was studied in different soils .We have used a modern device( SARAD German-made)was used to calculate the concentration of radon in different degrees of humidity and temperature. After linking it to the exposure system for radon, which was made by the researchers ,results obtained for soil indicated to a great agreement between the theoretical(predicted) and practical (measured) values of the results of this study. The study also indicated that diffusion coefficient decreased at slightly increasing of humidity by (10% -60%) of the diffusion coefficient results in the low humidity levels, which are less than 40% with a significant increase of more than(10%-60%)for humidity levels greater than 40% .Also for the diffusion length, it decreases with increasing of humidity.