Electron Paramagnetic Resonance Study of the Radiation Damage in Trans-Chalcone Single Crystal


Caliskan B., Caliskan A. C.

ACTA PHYSICA POLONICA A, vol.136, no.1, pp.92-100, 2019 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 136 Issue: 1
  • Publication Date: 2019
  • Doi Number: 10.12693/aphyspola.136.92
  • Title of Journal : ACTA PHYSICA POLONICA A
  • Page Numbers: pp.92-100

Abstract

Gamma irradiated trans-chalcone (C15H12O) single crystals are investigated at 120 K using electron paramagnetic resonance technique. Trans-chalcone single crystals are irradiated with Co-60-gamma rays, at room temperature. The EPR spectra of gamma irradiated trans-chalcone single crystals are studied for different orientations of crystals in a magnetic field. The spectra are found to be temperature independent. The structure of the radical produced by gamma-irradiation of a single crystal of trans-chalcone is discussed. The investigation of EPR spectra of gamma-irradiated single crystals of trans-chalcone shows the presence of two trans-chalcone anion radicals. The two trans-chalcone anion radicals are created by the scission of the carbon-oxygen double bond. The reduction of trans-chalcone is identified which is formed by the addition of an electron to oxygen of the formed C-O bond. The principal values of the hyperfine coupling tensors of the unpaired electron and the principal values of the g-tensors and direction cosines of the radiation damage centers are determined. The results are found to be in good agreement with the existing literature.