G. V. Mamin, A. A. Rodionov, M. S. Tagirov, D. A. Tayurskii, N. Mulders, “Electron paramagnetic resonance of radiation-induced paramagnetic centers in an aerogel”, Pis'ma v Zh. Èksper. Teoret. Fiz., 2008, Volume 88, Issue 4,Pages <nobr>281

This article is cited in 5 papers

CONDENSED MATTER

Electron paramagnetic resonance of radiation-induced paramagnetic centers in an aerogel

G. V. Mamin^a, A. A. Rodionov^a, M. S. Tagirov^a, D. A. Tayurskii^a, N. Mulders^b

^a Kazan State University, Kazan, 420008, Russia
^b University of Delaware, Newark, DE, USA

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.

PACS: 83.80.Lz, 87.64.Ee, 87.64.kh

Received: 09.06.2008