SPECTROSCOPY LETTERS, vol.33, pp.735-742, 2000 (SCI-Expanded)
The gamma-irradiated samples of vacuumed powder and single crystal of C2H2O4.2H(2)O have been investigated by ESR method. The spectra of these single crystal and unvacuumed powder are attributed to R C HOH radical, but the peaks belonging to this radical in the gamma irradiated powder sample are not observed in the spectrum after having been vacuumed. After A and g tensor values of this radical have been calculated, it was observed to be anisotropic. At low temperature, a considerable change in the spectrum has not been observed.