Electron paramagnetic resonance analysis of gamma irradiated 4-nitropyridine N-oxide single crystal

Caliskan B., Civi M., Birey M.

RADIATION EFFECTS AND DEFECTS IN SOLIDS, vol.161, no.5, pp.313-317, 2006 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 161 Issue: 5
  • Publication Date: 2006
  • Doi Number: 10.1080/10420150600576049
  • Journal Name: RADIATION EFFECTS AND DEFECTS IN SOLIDS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.313-317
  • Keywords: EPR, spectroscopic splitting factor, G-factor, isotropic hyperfine coupling constant, SUM-FREQUENCY GENERATION, SPIN-RESONANCE, 2ND-HARMONIC GENERATION, RADICALS, PYRIDINE, ESR
  • Ankara University Affiliated: No

Abstract

A free radical produced by Co-60-gamma irradiation in single crystals of 4-nitropyridine N-oxide, C5H4N2O3, has been observed and analyzed for different orientations of the crystal in the magnetic field at the temperature between 120 and 450 K, using an Electron Paramagnetic Resonance (EPR) technique. The spectra were found to be temperature independent and the resonance form of the radical was attributed to the 4-nitropyridinium cation radical.