Electron Paramagnetic Resonance Study of the Radiation Damage in Trans-Chalcone Single Crystal |
| B. Caliskana, A. Cengiz Caliskanb
aDepartment of Physics, Faculty of Arts and Science, Pamukkale University, 20070, Kinikli, Denizli, Turkey bDepartment of Chemistry, Faculty of Science, Gazi University, 06500, Ankara, Turkey |
| Received: June 29, 2018; revised version October 2, 2018; in final form November 27, 2018 |
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| Gamma irradiated trans-chalcone (C15H12O) single crystals are investigated at 120 K using electron paramagnetic resonance technique. Trans-chalcone single crystals are irradiated with 60Co-γ 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 γ-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. |
DOI:10.12693/APhysPolA.136.92 topics: EPR, trans-chalcone (C15H12O), spectroscopic splitting factor, hyperfine coupling constant, radiation damage center |