Influence of fluorination of xerogels on the intensity of photoluminescence of gamma-irradiated sol-gel quartz glasses |
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| Authors: | G A Lisovskii V A Saechnikov É A Chernyavskaya T P Yanukovich I M Mel’nichenko E N Poddenezhnyi |
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| Institution: | (1) A. N. Sevchenko Scientific Research Institute of Applied Physical Problems, 7 Kurchatov Str., 220064 Minsk, Belarus;(2) F. Skorina Gomel State University, Belarus |
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| Abstract: | We investigated the influence of fluorination of xerogel on the intensity of luminescence with a maximum at 1.9 eV attributable
to nonbridging oxygen atoms in gamma-quanta irradiated sol-gel quartzglasses. It is established that in samples with a high
content of hydroxyl groups (more than 8 ppm) the intensity of this luminescence correlates with the content of hydroxyl in
the initial samples. Fluorination of gels at the technological stage before sintering substantially reduces the number of
silanol groups, improves the quality of glass, and increases their radiative-optical stability.
Translated from Zhurnal Priklandoi Spektroskopii, Vol. 67, No. 2, pp. 266–268, March–April, 2000.
This work was carried out with financial support from the Belarusian Republican Foundation for Fundamental Research, project
F98-139. |
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| Keywords: | tetraethylorthosilicate xerogel fluorination sintering sol-gel quartz glasses photoluminescence silanol groups peroxide bridges nonbridging oxygen atoms gamma irradiation radiative-optical stability |
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