EPR study of γ-irradiated tetra-N-butylammonium iodide

Abstract

The electron paramagnetic resonance of γ -irradiated single crystal of tetra-N-butylammonium iodide has been studied for different orientations of the crystals in a magnetic field. The radical produced by gamma irradiation has been investigated at 300 K. The spectra were found to be magnetic field dependent and radiation damage centers were attributed to the (C α H 2 C β H 2 C γ H 2 CH 3 ) radical. The principal values of the hyperfine coupling tensor of the unpaired electron with these atoms and the principal values of the gtensor were determined and the hyperfine coupling constants were verified by computer simulation. The results were found to be in good agreement with the existing literature data and theoretical predictions.

Determination of dosimetric and kinetic features of gamma irradiated solid calcium ascorbate dihydrate using ESR spectroscopy

“…Despite these advantages, irradiation also causes damage in the molecular structure. Electron spin resonance (ESR) spectroscopy has been frequently used for identifying irradiation damage centers in many substances *Email: htuner@balikesir.edu.tr; htuner@hacettepe.edu.tr 62 H. Tuner (24)(25)(26)(27)(28)(29)(30)(31)(32). In this study, kinetic and structural features of the radicalic intermediates produced upon gamma irradiation and dosimetric features of CaAs were studied using ESR spectroscopy.…”

Identification of radical structures on 1-pentamethylbenzyl-3-ethylimidazoliumsilver(I)bromide and 1,3-bis(pentamethylbenzyl)-4,5-dimethylbenzimidazoliumsilver(I)bromide exposed to gamma rays: an EPR study

“…In recent years, electron paramagnetic resonance (EPR) technique has been widely used for characterization of various materials . Researchers have investigated compounds containing Ag and Br by using EPR method.…”

Comparative Study of Influences of Gamma Rays on Calix[4]Arene and 25,27-di(4-Nitrobenzyl)-26,28-Dihydroxycalix[4]Arene: EPR Study

“…Therefore, it is important to identify radical structures produced by irradiation. EPR is a powerful spectroscopic method for detecting radicals in the materials [7][8][9][10][11][12][13][14][15][16][17][18]. In this study, Calix [4]arene, labeled calix [4]arene (1), and 25,27-di(4-nitrobenzyl)-26,28-dihydroxycalix [4]arene, labeled calix [4]arene(2), were exposed to gamma rays and then radical structures of these calix [4]arenes were evaluated by EPR method.…”