caa a22 4500 467923507 CHVBK 20180406152923.0 cr unu---uuuuu 170328e20061001xx s 000 0 eng 10.1134/S108765960605004X doi (NATIONALLICENCE)springer-10.1134/S108765960605004X The influence of irradiation on the microhardness and photoluminescence of SiO2 [Elektronische Daten] [M. Mussaeva, M. Kalanov, E. Ibragimova, M. Muminov] The microhardness and photoluminescence spectra excited with 337-nm laser radiation in commercial SiO2 glasses (UV windows, substrates with BaTiO3 film coatings) exposed to 60Co gamma radiation and a mixed neutron flux from the reactor are investigated. It is revealed that initial samples contain nanocrystalline phases. An increase in the microhardness and the intensity of the excitonic UV luminescence due to 60Co gamma irradiation and the quenching of the photoluminescence associated with the nonbridging oxygen centers result from healing of Si-O dangling bonds and microcracks in the surface layer at the nanocrystal-glass matrix and substrate-coating interfaces. It is demonstrated that reactor irradiation leads to the phase transformation of SiO2 cristobalite into tridymite and BaO into BO2, as well as to the decomposition of BaTiO3 and BaCO3. This brings about a decrease in the microhardness and photoluminescence quenching. Pleiades Publishing, Inc., 2006 Mussaeva M. Institute of Nuclear Physics, Academy of Sciences of Uzbekistan, pos. Ulugbek, 702132, Tashkent, Uzbekistan aut Kalanov M. Institute of Nuclear Physics, Academy of Sciences of Uzbekistan, pos. Ulugbek, 702132, Tashkent, Uzbekistan aut Ibragimova E. Institute of Nuclear Physics, Academy of Sciences of Uzbekistan, pos. Ulugbek, 702132, Tashkent, Uzbekistan aut Muminov M. Institute of Nuclear Physics, Academy of Sciences of Uzbekistan, pos. Ulugbek, 702132, Tashkent, Uzbekistan aut Glass Physics and Chemistry Nauka/Interperiodica 32/5(2006-10-01), 516-523 1087-6596 32:5<516 2006 32 10720 https://doi.org/10.1134/S108765960605004X text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S108765960605004X text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Mussaeva M. Institute of Nuclear Physics, Academy of Sciences of Uzbekistan, pos. Ulugbek, 702132, Tashkent, Uzbekistan aut NATIONALLICENCE 700 1- Kalanov M. Institute of Nuclear Physics, Academy of Sciences of Uzbekistan, pos. Ulugbek, 702132, Tashkent, Uzbekistan aut NATIONALLICENCE 700 1- Ibragimova E. Institute of Nuclear Physics, Academy of Sciences of Uzbekistan, pos. Ulugbek, 702132, Tashkent, Uzbekistan aut NATIONALLICENCE 700 1- Muminov M. Institute of Nuclear Physics, Academy of Sciences of Uzbekistan, pos. Ulugbek, 702132, Tashkent, Uzbekistan aut NATIONALLICENCE 773 0- Glass Physics and Chemistry Nauka/Interperiodica 32/5(2006-10-01), 516-523 1087-6596 32:5<516 2006 32 10720 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer