Ядерна фізика та енергетика Nuclear Physics and Atomic Energy   ISSN: 1818-331X (Print), 2074-0565 (Online)   Publisher: Institute for Nuclear Research of the National Academy of Sciences of Ukraine   Languages: Ukrainian, English   Periodicity: 4 times per year   Open access peer reviewed journal

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H. A. Abdel-Ghany<sup>1

1</sup>Physics Department, Faculty of Girls for Art, Science and Education, Ain-Shams University, Cairo, Egypt

Abstract: The natural radionuclides (²³⁸U, ²³²Th, and ⁴⁰K) contents of Manganese ore collected by Sinai Manganese Company in Egypt-Cairo have been determined by low background spectroscopy using hyper-pure germanium (HPGe) detector. The mean activities due to the three radionuclides (²³⁸U, ²³²Th, and ⁴⁰K) were found to be 3543 ± 106, 222 ± 6.6 and 3483 ± 104 Bq/kg, respectively. The absorbed dose rates due to the natural radioactivity in samples under investigation ranged from 1522 ± 45 to 1796 ± 53 nGy/h. The radium equivalent activity varied from 3807 ± 114 to 4446 ± 133 Bq/kg. Also, the representative external hazard index values for the corresponding samples were estimated.

Keywords: radionuclides, ²³⁸U, ²³²Th, ⁴⁰K, manganese ore, absorbed dose rates, radium equivalent activity, external hazard index.

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