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Öğe Alloying effect on K X-ray intensity ratio and production cross section values of Zn and Cr in Zn-Cr alloys(Pergamon-Elsevier Science Ltd, 2013) Dogan, M.; Tirasoglu, E.; Karahan, I. H.; Aylikci, N. Kup; Aylikci, V.; Kahoul, A.; Cetinkara, H. A.In this study, sigma(K alpha), sigma(K beta) production cross-sections and K-beta/K-alpha intensity ratios of Cr and Zn have been measured in pure metals and in different alloy compositions which have different composition values. And also, empirical and semi-empirical K-shell fluorescence yields (omega(K)) and K-beta/K-alpha intensity ratios from the available experimental data for elements with 23 <= Z <= 30 were calculated. The experimental data are fitted using the quantity (omega(K)/(1-omega(K)))(1/4) vs. Z to deduce the empirical K-shell fluorescence yields and K-beta/K-alpha intensity ratios. The effects of alloying on the fluorescence parameters and bath temperatures on alloy compositions were investigated. Our analysis indicates that these effects arise from reorganization of atom and charge transfer mechanism in alloys. (c) 2013 Elsevier Ltd. All rights reserved.Öğe Alloying effect on K X-ray intensity ratio and production cross section values of Zn and Cr in Zn-Cr alloys (vol 87, pg 6, 2013)(Pergamon-Elsevier Science Ltd, 2015) Dogan, M.; Tirasoglu, E.; Karahan, I. H.; Aylikci, N. Kup; Aylikci, V.; Kahoul, A.; Cetinkara, H. A.[Abstract Not Available]Öğe Empirical and semi-empirical interpolation of L X-ray fluorescence parameters for elements in the atomic range 50 ? Z ? 92(Pergamon-Elsevier Science Ltd, 2015) Aylikci, V.; Kahoul, A.; Aylikci, N. Kup; Tirasoglu, E.; Karahan, I. H.; Abassi, A.; Dogan, M.In this study, interpolations (empirical and semi-empirical) of L sub-shell fluorescence yield and L shell Coster-Kronig transition probability values and the measured L X-ray production cross-sections, intensity ratios and L sub-shell fluorescence yield values of elements have been performed in the range of 50 <= Z <= 92. In this experimental setup, two sources (50 mCi Fe-55 and 50 mCi Am-241) were used. L X-rays emitted by samples were counted by an Ultra-LEGe detector with a resolution of 150 eV at 5.9 key. (C) 2014 Elsevier Ltd. All rights reserved.Öğe Influence of pH and glycine on the K X-ray fluorescence parameters of Zn and Cr in Zn-Cr alloys(Elsevier Science Bv, 2014) Dogan, M.; Aylikci, V.; Tirasoglu, E.; Karahan, I. H.In this study, sigma(K alpha,) (beta) production cross-sections and K-beta/K-alpha, intensity ratios of Cr and Zn have been measured in pure metals and in different alloy compositions which have different composition values. The alloying effects on the fluorescence parameters of Cr and Zn were investigated and the changes in these parameters interpreted according to the rearrangement of valance state electrons and the charge transfer process between the 3d elements which constitute the alloys. The samples were excited by 59.5 keV gamma-rays from a Am-241 annular radioactive source. K X-rays emitted by samples were counted by an Ultra-LEGe detector with a resolution of 150 eV at 5.9 keV. The effect of pH and glycine values on alloy composition and alloying effect on the K x-ray fluorescence parameters of Cr and Zn were also investigated. Copyright (C) 2014, The Egyptian Society of Radiation Sciences and Applications. Production and hosting by Elsevier B.V. All rights reserved.Öğe L shell X-ray fluorescence parameters of Pb in phthalocyanine complexes(Pergamon-Elsevier Science Ltd, 2015) Dogan, M.; Cengiz, E.; Nas, A.; Tirasoglu, E.; Kantekin, H.; Aylikci, V.The L shell X-ray intensity ratios L-i/L-alpha (i=l, beta and gamma), the production cross-sections sigma(Li) (i=l, alpha, beta and gamma) and the L-3 subshell fluorescence yields omega(L3) have been investigated for the element Pb in the phthalocyanine complexes. The measurements have been performed using an Am-241 annular radioactive source and an Ultra-LEGe detector with a resolution of 150 eV at 5.9 keV. The experimental values have been compared with the theoretical values of pure Pb element. (C) 2015 Elsevier Ltd. All rights reserved.
