Physical parameters determination for gibbsite – Bearing marl, Abu – Thor area, southwestern, Sinai, Egypt

Publication date: Available online 5 February 2016 Source:Journal of Radiation Research and Applied Sciences Author(s): Sayed. F. Hassan For the sake of determination of some physical factors for gibbsite – bearing marl, at the area under consideration, a cylindrical tube of length 60 cm and diameter 6 cm was used. This tube contains ten CR-39 detectors of area 1 cm*1 cm fixed on the inner side of the tube in mutual positions of fixed interval distance 5 cm for each. The measured radon gas concentrations ranged from 1027.87 ± 93.32 Bq/m3 to 1712.39 ± 126.19 Bq/m3, the exhalation rate ranged from 3.39E-5±3.08E-6 to 4.66E-5±3.00E-6 mBq/m2s−1. By using the measured value of porosity which is (49.19%), the measured diffusion coefficient was calculated, it ranged from 3.26 E-3 ± 5.44.08E-7 (m2 s−1) to 5.77E-8 ± 1.308E-7 (m2s−1) and the diffusion length ranged from 3.63 ± 2.3 m to 56.19 ± 0.73 m, these values were used to determine the depth of the radioactive layer, the obtained results for the layer depth was found to be 16.83 m.

Source: Journal of Radiation Research and Applied Sciences - February 7, 2016 Category: Physics Source Type: research