EPR SPECTRA FOR γ-IRRADIATED HYDRATED DITHIONATE BARIUM SINGLE CRYSTALS
<i>The EPR spectra were studied for hydrated dithionate barium single crystals γ-irradiated by low (80 Gr) and high (10 kGr) doses. The EPR spectra of slightly irradiated samples manifest four lines, of which the most intense one is caused by SO</i><sub><i>3</i></sub><sup><i></i></sup><sup><i>-</i></sup><i> radical. The other line seems to belong to SO</i><sub><i>2</i></sub><sup><i></i></sup><sup><i>-</i></sup><i>. High doses of irradiation of single crystals give rise to weak lines of hyperfine structure and pair lines of closely spaced SO</i><sub><i>3</i></sub><sup><i></i></sup><sup><i>-</i></sup><i> centers exhibiting the strong angular dependence, along with the above intense line. Principal values of hyperfine SO</i><sub><i>3</i></sub><sup><i></i></sup><sup><i>-</i></sup><i> interaction tensor and parameters of dipole-dipole interaction between pairs of SO</i><sub><i>3</i></sub><sup><i></i></sup><sup><i>- </i></sup><i>centers were found.</i><sup><i> </i></sup><i>Quantum-chemical calculation of electron structure for isolated radicals SO</i><sub><i>3</i></sub><sup><i></i></sup><sup><i>-</i></sup><i> and SO</i><sub><i>2</i></sub><sup><i></i></sup><sup><i>-</i></sup><i> was carried out. Values of g tensors and hyperfine interaction were calculated</i>