EPR of gamma irradiated single crystals of cholesteryl benzoate

Caliskan B., Aras E., Asik B., Buyum M., Birey M.

RADIATION EFFECTS AND DEFECTS IN SOLIDS, cilt.159, sa.1, ss.1-5, 2004 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 159 Sayı: 1
  • Basım Tarihi: 2004
  • Doi Numarası: 10.1080/10420150310001604101
  • Dergi Adı: RADIATION EFFECTS AND DEFECTS IN SOLIDS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1-5
  • Anahtar Kelimeler: ESR, CHCH2, CHCH2CH2, C34H50O2, cholesteryl benzoate, spectroscopic splitting factor, isotropic hyperfine coupling constant, spin density, ELECTRON-SPIN-RESONANCE
  • Ankara Üniversitesi Adresli: Hayır

Özet

The cholesteryl benzoate compound has been irradiated with Co-60-gamma rays at room temperature. The irradiated samples have been examined for paramagnetic resonance, and in several cases the observed spectra could be identified with specific radicals. In each case the results have been considered in relation to the present knowledge of the radiation chemistry of the compound. The single crystals have been investigated between 123 and 300 K. The spectrum parameters are found to be temperature independent. Radiation damage centers are attributed to CHCH2 and CHCH2CH2 radicals. The g values and the hyperfine coupling constants of the unpaired electron with the protons were determined.