Yazar "Birey, Mehmet" seçeneğine göre listele

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    Electron paramagnetic resonance of γ-irradiation damage centers in fumaric acid dipotassium salt dihydrate
    (Taylor & Francis Ltd, 2006) Birey, Mehmet; Aşık, Biray; Murathan, Ayşe
    Electron paramagnetic resonance spectra of gamma-irradiated single crystals of fumaric acid dipotassium salt dihydrate have been studied for different orientations of the crystal in a magnetic field. The radicals produced by gamma-irradiation have been investigated between 123 and 300 K. The spectra were found to be temperature-independent, and radiation damage centers were attributed to the (< C > over dot)(alpha)H alpha C beta H beta COO-- and (< C > over dot)H=CH2 radicals. The g factor and hyperfine coupling constants were found to be a(alpha) = 16.53; a(beta) = 22; g(ort) = 2.003162; a(CH) = 19; a(CH2) = 11.0; g(av) = 2.0011; rho = 0.66 and rho = 0.76.
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    EPR spectroscopy of γ-irradiated single crystals of 5-methyle-2-nitrophenol
    (Taylor & Francis Ltd, 2006) Aras, Erdal; Aşık, Biray; Büyüm, Mehmet; Birey, Mehmet
    The electron paramagnetic resonance of gamma-irradiated single crystals of 5-methyle-2-nitrophenol has been studied for different orientations of the crystals in a magnetic field. The radicals produced by gamma irradiation have been investigated at temperatures between 120 and 330 K. The spectra were found to be temperature dependent, and radiation damage centers were attributed to [GRAPHICS] radicals. The principal values of the g-tensor were determined. The results were found to be in good agreement with the existing literature data and theoretical predictions.
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    EPR study of γ-irradiated N-hydroxysuccinimide
    (Taylor & Francis Ltd, 2008) Asik, Biray; Aras, Erdal; Birey, Mehmet; Eken, Mahmut
    The electron paramagnetic resonance of gamma-irradiated single crystal of N-hydroxysuccinimide has been studied for different orientations of the crystals in a magnetic field. The radicals produced by gamma-irradiation have been investigated between 150 and 300 K. The spectra were found to be temperature independent and radiation damage centers were attributed to [GRAPHICS] radicals.