Electron paramagnetic resonance of radiation-induced paramagnetic centers in an aerogel |
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| Authors: | G V Mamin A A Rodionov M S Tagirov D A Tayurskii N Mulders |
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| Institution: | (1) Kazan State University, Kazan, 420008, Russia;(2) University of Delaware, Newark, DE, USA |
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| Abstract: | Silicon oxide aerogel samples irradiated with x rays at room temperature have been analyzed using the electron paramagnetic resonance method. It has been found that three types of paramagnetic centers appear: paramagnetic centers with a g factor of 2.0035, centers associated with the presence of protons in SiO2 globules, and centers in the adsorbed film on the aerogel surface. The fast (T fast = 30 h) and slow (T slow = 70 d) processes have been revealed in the recombination of these centers. |
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