| Autor: |
Başkan, M. Halim, Osmanoğlu, Şemsettin, Dicle, I. Yeşim |
| Předmět: |
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| Zdroj: |
Radiation Effects & Defects in Solids; Nov2009, Vol. 164 Issue 11, p673-678, 6p, 3 Diagrams, 1 Chart |
| Abstrakt: |
The electron paramagnetic resonance spectra of γ-irradiated powders of α-(methylamino)isobutyric acid - CH3NHC(CH3)2COOH, α -aminoisobutyric acid methyl ester hydrochloride - NH2(CH3)2CCOOCH3 HCl, and diethylmalonic acid - (CH3CH2)2C(COOH)2 have been investigated at room temperature. It has been found that γ -irradiation produces the (CH3)2CCOOH radical in the first, the (CH3)2CCOOCH3 radical in the second and the (CH3CH2)2CCOOH radical in the third compound. The spectra were computer-simulated. The g values and the hyperfine coupling constants of the unpaired electron with the environmental methyl, methylene protons and OH proton were determined. The results were found to be in good agreement with the existing literature data and theoretical predictions. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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