EPR study of gamma-irradiated Na2S2O3 center dot 5H(2)O single crystals

Yildirim I., Karabulut B., Bozkurt E., Koksal F.

RADIATION PHYSICS AND CHEMISTRY, vol.78, no.3, pp.165-167, 2009 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 78 Issue: 3
  • Publication Date: 2009
  • Doi Number: 10.1016/j.radphyschem.2008.11.007
  • Journal Name: RADIATION PHYSICS AND CHEMISTRY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.165-167
  • Keywords: EPR, Gamma irradiation, Sulfur-oxy radicals, CENTERS, ESR
  • Ondokuz Mayıs University Affiliated: Yes

Abstract

EPR study of gamma-irradiated sodium thiosulfate pentallydrate single crystals has been carried out at room temperature, The title compound crystallizes in monoclinic system with the unit cell parameters, a = 5.94 angstrom, b = 21.57 angstrom, c = 7.53 angstrom and beta = 103.58', with Z=4. The observed lines in the EPR spectra have been attributed to the species Of S2O, SO2-, S2O2-, SO3- and S2O3-. Each radical has shown two magnetically distinct sites in monoclinic lattice. The angular variation of EPR spectra has also shown that both S2O and S2O2-, radicals have two groups and each of that has two distinct sites. The principal g values for cacti site have been calculated. (c) 2008 Elsevier Ltd. All rights reserved.