The study focuses on measuring the values of 238 U, 232 Th and 40 K natural radionuclides in soil samples in Badra oil field area (Iraq). Also, the radiological risk data were calculated for all samples in this study. The technique used in this study was gamma-ray spectrometry with NaI(Tl) detector. The averages of specific activity are: 24.7 Bq/kg for 238 U, 13.6 Bq/kg for 232 Th, and 538.9 Bq/kg for 40 K. Besides, the estimations of radiological effects like the radium equivalent (Ra eq ), the absorbed dose rate (D r ), external hazard index (H ex ), internal hazard index (H in ), representative gamma hazard index (I γ ) and the total annual effective dose equivalent (AEDE) are 85.5 Bq/kg, 42.1 nGy/h, 0.23, 0.30, 0.66 and 0.26 mSv/y respectively. When comparing the results in the study area with the world mean values specified by the UNSCEAR, OCDE and ICRP, the study terminates that the limits of health risk are safe and may not menace the workers at these locations due to these radionuclide limits. The values were subjected to GIS environment under the WGS1984 coordinate system for the sake of results' coordination, and processed in Inverse Distance Weighted interpolation as the best processing.
This study re-examines the effect of nuclear deformation on the model dependent Gamow-Teller (GT) strength distributions of neutron-deficient ($^{178-192}$Hg, $^{185-194}$Pb and $^{196-206}$Po) nuclei. The nuclear ground state properties and shape parameter were calculated using the Relativistic Mean Field model. Three different density-dependent interactions were used in the calculation. Estimated shape parameters were later used within the framework of deformed proton-neutron quasi-random phase approximations model, with a separable interaction, to calculate the GT strength distributions, half-lives and branching ratios for the neutron--deficient isotopes. It was concluded that half-lives and GT strength distributions vary considerably with change in shape parameter.
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