| Biography | |
|---|---|
 Prof. Mohamed Salem Badawi Faculty of Science, Beirut Arab University, Lebanon |
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| Title: The Geometry Effect of the Source-to-detector Space on Calculation of Coincidence Summing Factors in Gamma-Ray Spectrometry Field | |
| Abstract: In gamma-ray spectrometry, the coincidence summing problem is considered to be one of the most problems, which affects the detector efficiency calculations. These phenomena will lead to non-negligible errors in the sample activity determination as well. The problem can appear clearly when the sources or samples which contain multi-line radioactive isotopes such as, 60Co, 133Ba, and 152Eu were measured at a close distance from the detector active part. In this work, the calculated total and full-energy peak efficiency of gamma-ray spectrometry for using different radioactive sources, in addition to the nuclear data of the radioactive decay scheme were used to estimate the gamma-gamma coincidence summing factors. The calculations were based on the numerical simulation method (NSM), which meanly used the effective solid angle due to the source-to-detector separation distance. The outcome results for the coincidence summing factors were compared with those that came out from ETNA and EFFTRAN programs CS as well. The results show a good agreement, especially at close source-to-detector distances. Keywords: Geometry Effect, Gamma-Gamma Coincidence Summing (CS), γ-ray Detectors, and Numerical Simulation Method (NSM). | |
| Biography: Dr. Badawi completed his PhD in radiation physics 2010 as a fellowship system between Alexandria University (Egypt) and Belgian Nuclear Research Centre (SCK.CEN) (Belgium). He has an active license as an expert in radiation protection from Nuclear & Radiological Regulatory Authority-Egypt. He also renews, established and managed the radiation physics research laboratory in the faculty of science, Alex Univ and faculty of science, BAU as well. Dr. Badawi held several positions: • Head of Physics Department, Faculty of Science, Beirut Arab University, Lebanon since 2020. • Editor and a Reviewer in 85 international Journals. • Supervisor for 19 PhD and 27 M.Sc. Thesis. Throughout his career, he had several running international projects in the radiation field with Russia, Montenegro, Saudi Arabia, Lebanon and Egypt. Dr. Badawi research interests focus on field of radiation physics and he participated in 17 international conferences and he has published over 96 scientific professional papers. | |
