Electron paramagnetic resonance study of the radiation damage in trans-chalcone single crystal
| Autor: | Çalışkan, Betül., Cengiz Caliskan, A. |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Hyperfine coupling tensors
Crystal structure Radiation damage center Trans-chalcone (C15H12O) Electron resonance Electrons Tensors Spectroscopic splitting factor Hyperfine coupling constant Paramagnetism Unpaired electrons Isomers Oxygen Direction cosine Temperature independents Radiation damage Hyperfine coupling constants Chalcones Electron spin resonance spectroscopy Carbon-oxygen double bonds Single crystals EPR Paramagnetic resonance |
| 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 60Co-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 -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. © 2019 Polish Academy of Sciences. All rights reserved. |
| Databáze: | OpenAIRE |
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