Radon Measurement and Radiological Dose Assessment From Terrestrial Rocks Using Solid-State Nuclear Track Detectors

Abstract

The Sukari granitoid pluton, namely the Sukari gold mine (SGM), located in Egypt's southeastern desert, is outstanding gold-bearing granite in the Arabian Nubian Shield. CR-39 and LR-115 Nuclear Track Detectors (NTD) were used in the present study to determine radon concentration, after which the exhalation rate, annual effective dose, and work level were calculated. The overall average radon values from the CR-39 and LR-115 NTD are 11.27 and 11.29 kBqm -3 , respectively, indicating a consensual correlation that depends on the charged particles, particularly accumulation radon gas emissions from investigated samples measured by Nuclear Track Detectors. The findings revealed a significant quantity of NORM in the SGM due to the radon concentration which is greater than the IAEA, ICRP, and UNSCEAR recommended limit of 1000 Bqm -3 . The present study aims to evaluate and predict the radioactive changes in the investigation area, assess dangerous radiation, and implement radiation safety standards for the workers in the SGM. The current research may also be useful in the future investigation and mining of nuclear materials for optimization business in the SGM and its surrounding area.

Evaluation of Radon Radioactivity and Radiological Impact by Using Solid-State Nuclear Track Detector for Erediya younger granites of Central Eastern Desert in Egypt

“…Appl., Vol. XX, X, (2023) studied fields, T is the irradiation time (28 days), and η is the calibration coefficient of CR-39 detectors [13,16,32] For calculating the levels of dissolved radon concenteation functional depth of investigated samples the following equation was used [33,34]:…”

Correlation Influence and Quantification of Grain Size on Radon Radioactivity for (Ca2SiO4) Ore Rocks

“…Alpha track counting for each sample was performed by using an optical microscope with a magnification of 640x taking into consideration the background [10,11,13,29].…”

“…For the actual summation of alpha tracks, the radiation background was counted and eliminated from the total count of investigated samples [30][31][32]. Equation (1) gives the radon activity concentration Rn C in Bqm -3 at secular equilibrium [10,11,13,29,[33][34][35][36]:…”

“…There are numerous types of SSNTDs have been enabled to measure radon radioactivity concentration. The cultivated NTD has a distinctive resolution of charged particles [1,[10][11][12][13]. Numerous literature studies accomplished to explore the encompasses of some physical and chemical factors, for example, bulk etching and optical properties of the NTDs [8,[14][15][16].…”

Radionuclides Determination and Computing Radiobiological Dose for TENORM Exposure Using NaI(Tl) Gamma-ray Spectrometer

“…Special attention to radionuclides production from ( 232 Th, 238 U, and 235 U) decay series is given to radon, which is considered the main source of natural internal contamination to which occupational and public occupants are exposed [1][2][3][4][5][6][7]. The biological effects of the weighting factor denoted; by tissue/organ weighting factors (WT) have been established, which compare the relative biological effects of various types of radiation and the susceptibility of different organs [8][9][10][11]. The Environmental Protection Agency (EPA) gives an account of work sponsored by an agency of the United States Government which relies on large-scale data for modeling calculation of equivalent doses based on the radioactivity measurements [12].…”