Yücel, HalukBudak, Mustafa Güray2022-12-222022-12-222020-04-15Akkaya, G. vd. (2020). "Neutron self-shielding correction in application of k(0)-NAA standardization method to determine Mn content in manganese ores". Nuclear Instruments & Methods in Physics Research Section B-beam Interactions with Materials and Atoms, 475, 1-7.0168-583X1872-9584https://doi.org/10.1016/j.nimb.2020.04.025https://www.sciencedirect.com/science/article/pii/S0168583X20302020http://hdl.handle.net/11452/30044In this study, it is aimed to investigate neutron self-shielding effect in application of k(0)-NAA standardization method to determine Mn contents in manganese ores. Because the neutron self-shielding correction factors are significant factors in application of k(0)-NAA method for large samples. To estimate these, several Mn-ore samples and Au monitor were irradiated separately in a 37 GBq Am-241-Be neutron source irradiation unit and then they were measured by using a 78.5% relative efficient HPGe detector. In this study, the sigmoid function approaches for calculation of G(th) and G(e) factors were applied for the right cylinder sample geometry at known elemental compositions in samples, determined by EDXRF technique with a 25 mm(2) Silicon Drift Detector (SDD). The present results indicate that k(0)-NAA method is applicable successfully to determine Mn contents in Mn-ore samples providing that G(th) and G(e) factors are estimated accurately even if a low-flux isotopic neutron source is used.eninfo:eu-repo/semantics/closedAccessManganese oreK(0)-NAA standardization methodNeutron self-shielding effectAm-Be isotopic neutron sourceActivation analysisUniversal curveSamplesAccuracyNAAEnergy dispersive spectroscopyGermaniumGermanium compoundsNeutron sourcesNeutronsOresShieldingStandardizationCorrection factorsElemental compositionsHPGe detectorsIsotopic neutron sourcesSample geometrySelf shielding effectSigmoid functionSilicon drift detectorPhosphorus compoundsInstruments & instrumentationNuclear science & technologyPhysicsArticle0005369088000012-s2.0-8508387513217475Instruments & instrumentationNuclear science & technologyPhysics, atomic, molecular & chemicalPhysics, nuclearNeutron Activation Analysis; Neutron Radiation; Research Reactors