Electron Paramagnetic Resonance Study of the Radiation Damage in Trans-Chalcone Single Crystal
| Autor: | A. Cengiz Caliskan, Betul Caliskan |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Chalcone
Materials science General Physics and Astronomy Electron Crystal structure Molecular physics law.invention Paramagnetism chemistry.chemical_compound Unpaired electron chemistry law Radiation damage Astrophysics::Earth and Planetary Astrophysics Electron paramagnetic resonance Single crystal |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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