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    Öğe
    Investigation of high-temperature-resistant rhenium-boron neutron shields by experimental studies and Monte Carlo simulations
    (Springer Singapore Pte Ltd, 2018) Korkut, Turgay; Korkut, Hatun; Aygun, Bunyamin; Bayram, Ozkan; Karabulut, Abdulhalik
    In this study, novel rhenium-boron neutron-shielding high-temperature-resistant materials were designed. The considered samples, Re60-B40, Re58-B42, Re50-B50, and Re40-B60, with different concentrations of rhenium and boron were investigated to elucidate their neutron-shielding performances, and compare them with well-known neutron-shielding materials such as the 316LN quality nuclear steel. In addition to the experimental studies, Monte Carlo simulations were performed using the FLUKA and GEANT4 codes, where 4.5-MeV neutrons emitted by a Am-241-Be source were employed. Experimental equivalent dose rates, simulated track lengths, energy balances, and neutron mass absorption cross sections were discussed in detail.
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    Öğe
    Study of neutron attenuation properties of super alloys with added rhenium
    (Springer, 2015) Korkut, Turgay; Aygun, Bunyamin; Bayram, Ozkan; Karabulut, Abdulhalik
    In this paper, the new generation of rhenium enriched super alloys with enhanced neutron attenuation properties was investigated. These materials provided improved neutron shielding capabilities compared to other shielding materials such as water, concrete, etc. The GEANT4 code was used to simulate transport of Am-Be source neutrons in new shielding materials. Neutron equivalent dose rate measurements were carried out to obtain the dose rate reduction. It was demonstrated that new rhenium enriched alloys are feasible for neutron shielding applications.