Browsing by Author "Boztosun, I"

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    Determination of the Sr/Ca ratio of tooth samples by photoactivation analysis in Southern Turkey
    Kavun, Y; Boztosun, I; Dapo, H; Maras, I; Segebade, C
    A nuclear analytical technique, namely instrumental photon activation analysis (IPAA), was used to determine Sr and Ca concentrations in human teeth. This work was conducted using the first accelerator facility, an off-shelf clinical linear accelerator (cLINAC), in Turkey. The tooth samples supplied by the Akdeniz University Faculty of Dentistry were analyzed for determination of the Sr/Ca element ratio. The results were obtained to demonstrate the impact of socioeconomic changes on dietary habits. A calibration material (CM; a mixture of calcium and strontium oxides) was required for quantification of the analytical results. The tooth samples, together with the CM, were exposed to 18 MeV end-point energy bremsstrahlung photons from the cLI-NAC. Thereafter, the gamma-ray spectra of the samples and the CM were obtained using high resolution gamma spectroscopy. Variations in the Sr/Ca ratio in the teeth of patients fed with beef and fizzy beverages were investigated in this study.
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    A new proton spectra for natC(p,xp) reaction at Ep=7 and 30 MeV
    Kucuk, Y; Zholdybayev, TK; Canbula, B; Mukan, Z; Sadykov, BM; Nassurlla, M; Ismailov, KM; Yücel, MB; Boztosun, I
    In this paper, we present a new measurement of the inclusive cross section (p,xp) reactions on Cu-nat at incident energies of E-p = 7 and 30 MeV. The (p,xp) reaction at E-p= 7 MeV on Cu-nat is measured for the first time and (p,xp) and (p,x alpha) inclusive cross section for the same target at E-p = 30 MeV is re-measured in order to improve the quality of the previous experimental data. For both energies, the mechanism of the pre-equilibrium reactions as well as the level of energy dependence are discussed and the adequacy of the theoretical models in explaining the newly measured experimental data is also assessed by comparing the experimental data with the results of the Hauser-Feshbach and Exciton models. We use the microscopic approach based on nucleon-nucleon interaction to produce the complex nuclear potential.