Browsing by Author "Bradley, D. A."

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    Evaluation of gamma-ray attenuation properties of bismuth borate glass systems using Monte Carlo method
    (Elsevier, 2017-03-18) Yalçın, Sezai; Gündoğdu, Özcan; Bradley, D. A.; Tarım, Urkiye Akar; Özmutlu, Emin N.; Gürler, Orhan; Uludağ Üniversitesi/Fen-Edebiyat Fakültesi/Fizik Bölümü.; AAH-4270-2021; AAH-1837-2021; 55062460600; 6507726213; 14019444500
    A Monte Carlo method was developed to investigate radiation shielding properties of bismuth borate glass. The mass attenuation coefficients and half-value layer parameters were determined for different fractional amounts of Bi2O3 in the glass samples for the 356, 662, 1173 and 1332 keV photon energies. A comparison of the theoretical and experimental attenuation coefficients is presented.
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    Screening parameter for elastic scattering of electrons
    (Taylor & Francis, 2021-08-30) Yalçın, Sezai; Tarım, Urkiye Akar; Gürler, Orhan; Gündoğdu, Özcan; Bradley, D. A.; AKAR TARIM, ÜRKİYE; GÜRLER, ORHAN; Bursa Uludağ Üniversitesi/Fen-Edebiyat Fakültesi/Fizik Bölümü.; 0000-0002-5494-5128; 0000-0002-8463-3432; AAH-4270-2021; AAH-1837-2021
    The present work, with its interest focusing on the elastic scattering of energetic electrons, provides a novel formulation that is demonstrated to give accurate values of the screening parameter. This is a matter considered vital in obtaining transport cross-sections, the work herein covering not only a wide range of electron energies popular in applications (1-3000 keV) but also a comprehensively wide range of target atomic numbers (Z: 1-94). Such ability has hitherto not been commonly available in making use of existing formulations. Results from the proposed formula together with comparisons made against previously published results are presented for seventeen representative elements, covering the energy range 1 keV to 3 MeV, providing a representative condensation from the 94 elements for which we have made comparable calculations. The new formulation is seen to offer a viable and accurate approximation, being both simple to apply and devoid of limitations within the bracketed electron energy and target atomic number ranges.