Paramagnetic centers by X-ray-irradiation of aluminium hydroxide |
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Authors: | J. Kuruc |
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Affiliation: | (1) Department of Nuclear Chemistry, Faculty of Sciences, Comeniu University, CS-842 15 Bratislava, Czech and Slovak Federal Republic |
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Abstract: | EPR spectra of paramagnetic centers originating from X-ray-irradiation of aluminium hydroxide at room temperature have been measured. The EPR spectrum represents a superposition of EPR spectra of ionic centers O–, holes of type and trapped electrons. Radiation chemical yield of paramagnetic centers observed at room temperature (293 K) is G(spins.)=4.4±0.6) spins per 100 eV absorbed energy. The decay of paramagnetic centers in irradiated Al(OH)3 was oberved at 293 K. The rate constant of the paramagnetic centers decay in irradiated Al(OH)3 is K2=(0.0980±0.0019) kg·mol–1·min–1 and their half-life is 9.43±0.18 days.Dedicated to the memory of the late Genrikh Markovis Kolyiari. |
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