"INFLUENCE OF IONIZING RADIATION ON THE DIFFUSE REFLECTION SPECTRA OF STEATITE CERAMICS SNC "
DOI:
https://doi.org/10.31489/2022No4/22-27Keywords:
steatite ceramics type-SNC, diffuse reflection, gamma-rays, no-gamma-irradiation, V-type hole centersAbstract
In this article, the radiation defects induced in steatite ceramics type- SNC- irradiated with high doses of gamma-rays of 60Co source and mixed reactor nо-gamma-irradiation were studied using optical spectroscopy, i.e. diffuse reflection method. An analysis of the results of the diffuse reflection spectra showed that some structural defects are formed under gamma-irradiation. These are oxygen vacancies, unbound oxygen atoms, and E1 -centers (a three-coordinated silicon atom that has captured an electron) in the ultraviolet region of the spectrum. In the visible region of the spectrum, the types of hole centers are different. After decomposing the spectrum of the visible region into Gaussians, it was found that in this region of the spectrum, with no –gamma- irradiation of the reactor, in comparison with gamma-irradiation, various types of hole centers - (O-Me, Me-metal) are additionally formed. The efficiency of creating these structural defects in nо-gamma-reactor irradiated samples was higher compared to gamma irradiated samples.
References
"1 Gasanov E.M., Chan K.G., Saidakhmedov K.Kh. Action of a high dose of γ-rays on steatite ceramic. Atomic Energy, 1996, Vol. 80, No. 2, pp. 127–130.
Ashurov M.Kh., Nuritdinov I., Saidakhmedov K.H. Radiative defect formation in steatite ceramics. Doklady AN RUz, 2021, No.3, pp.10-14. [in Russian]
Belov N.V. Essays on structural mineralogy. Moscow, Nedra. 1976, 344 p. [in Russian]
Avetikov V.G., Zinko E.I. Magnesia electroceramics. Moscow, Energiya, 1973, pp.77 – 79. [in Russian]
Myagkova E.S., Tlekhusezh M.A. Reagent and radiation resistance of ceramics. Nauchnoe obozreniye. Pedagogical Sciences, 2019, No. 4, pp.77 – 79. [in Russian]
Brekhovskikh S.M., Tyulkin V.A. Radiation-induced centers in inorganic glasses. Moscow, Ehnergoatomizdat, 1988, 200 p. [in Russian]
Silin A. R., Trukhin A. N. Point defects and elementary excitations in crystalline and vitreous SiO2. Riga, Zinatne, 1985, 242 p.[in Russian]
Saidakhmedov K Kh., Nuritdinov I. Investigation of Radiation Defects in Steatite Ceramics SK-1 and SNC by the EPR Method. Proceeding of the XIV Intern. Conf. «Solid state physics, functional materials and new technologies», Bishkek. 2018, pp.144 – 146.
Tanaka K., Kamiya K., Matsnoka M., et al. ESR-study afolf-gel-derived amorphous Fe2O3-SiO2 system. J.Non.Cryst.Sol., 1987, Vol.94, No. 3, pp.365–373. doi:10.1016/s0022-3093(87)80071-6
Bilan O.N., Voropay E.S., Gorbachev S.M., Solovyeva N.D. Luminescence of radiation-oxidized iron in silicate and quartz glasses. Journal of applied spectroscopy, 1989, 51 (4), p.244-248. [in Russian]
Mironova N.A., Ulmanis U.A. Radiation Defects and Metal Ions of the Iron Group in Oxides. Riga. Zinatne. 1988, 202 p. [in Russian]
Ashurov M. Kh., Amonov M.Z., Nuritdinov I., Saidakhmedov K.Kh. Diffuse reflection spectra of irradiation SK-1. Atomic energy, 2012, Vol. 111, No.4, рp. 301–304.
Boksha O.N., Grum-Grkimaylo S.V. Investigation of the optical spectra of crystals with ions of the iron group at room and low temperatures. Moscow, Nauka, 1972, 99 p. [in Russian]"
