Search Results - "Selim, Younis S."

Calibration of cylindrical detectors using a simplified theoretical approach by Abbas, Mahmoud I., Nafee, Sherif, Selim, Younis S.

“…The calibration of cylindrical detectors using different types of radioactive sources is a matter of routine. The most accurate method, that of experiment, is…”
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Calculation of relative full-energy peak efficiencies of well-type detectors by Abbas, Mahmoud I, Selim, Younis S

“…A mathematical expression to calculate the full-energy peak efficiency of HPGe well-type detectors has been derived in an integral form. The attenuation of…”
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A simple mathematical method to determine the efficiencies of log-conical detectors by Abbas, Mahmoud I., Nafee, Sherif, Selim, Younis S.

“…A new type of photon detector, log-conical, is proposed. The average path length traveled by an incident photon of arbitrary energy as well as the geometrical…”
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Analytical calculations of gamma scintillators efficiencies — II. Total efficiency for wide coaxial circular disk sources by Selim, Younis S, Abbas, Mahmoud I

“…A statistical integral formulation of the total efficiency for the general wide coaxial circular disk source–cylindrical NaI(Tl) detector arrangement (source…”
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Contribution of pair production process in full-energy peak efficiency calculation of semiconductor detectors for axial point sources with high-energy γ-rays by Selim, Younis S., Elzaher, Mohamed A., El-khatib, Ahmed M., Bassiouny, Mohamed M.

“…Study has been made of the contribution of the pair production process in calculation of detector efficiency. Particular attention has been paid to positron…”
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HPGe detector photopeak efficiency calculation including self-absorption and coincidence corrections for cylindrical sources using compact analytical expressions by Abbas, Mahmoud I., Selim, Younis S., Bassiouni, M.

“…Total and full-energy peak efficiencies, coincidence correction factors and the source self-absorption of a p-type coaxial HPGe detector for cylindrical…”
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Analytical calculation of the efficiencies of gamma scintillators. Part I: Total efficiency for coaxial disk sources by Selim, Younis S., Abbas, Mahmoud I., Fawzy, M.A.

“…Total efficiencies of clad right cylindrical NaI(Tl) scintillation detectors exposed to photons emitted by circular disk sources have been calculated by using…”
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Direct calculation of the total efficiency of cylindrical scintillation detectors for extended circular sources by Selim, Younis S., Abbas, Mahmoud I.

“…By the use of spherical coordinates, direct expressions for the total efficiency of a cylindrical NaI(Tl) detector arising from a non-axial point ( ϱ > R) and…”
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Spatial and energy distributions of fast monoenergetic neutrons in an infinite plane slab of material by Roomyia, M.A., Abdelwahab, L.M., Selim, Younis S.

“…The actual neutron energy and spatial distributions in a medium arising from unidirectional normally incident monoenergetic neutrons has been theoretically…”
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