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ESR Study of the Structure of γ-Irradiated Sodium-Aluminum- and Sodium-Boro-Phosphate Glasses

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Abstract

The ESR spectra of the anion radicals PO3 2– and PO4 2–, formed as a result of irradiating the terminal (Q (1)) and central (Q (2)) phosphorus-oxygen groups of chains of the phosphate glass, are obtained for γ-irradiated sodium-aluminum- and sodium-boron-phosphate glasses with Na/P = 1 and variable ratios Al/P and B/P. The concentration of linear (2Q (1) + Q (2)) and ring structural groupings (3Q (2)) in the irradiated sodium-boron-phosphate glass is determined to be independent of the ratio B/P, while in the sodium-aluminum-phosphate glass the concentration of ring structural groups increases as the ratio Al/P. The latter phenomenon could serve as an explanation of the higher chemical stability of sodium-aluminum-phosphate glass as compared with sodium-boron-phosphate glass.

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Authors and Affiliations

  1. A. A. Bochvar All-Russia Scientific-Research Institute of Standardization in Machine Engineering, Russia

    A. A. Vashman, V. E. Samsonov & A. V. Demin

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  1. A. A. Vashman
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  2. V. E. Samsonov
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  3. A. V. Demin
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Vashman, A.A., Samsonov, V.E. & Demin, A.V. ESR Study of the Structure of γ-Irradiated Sodium-Aluminum- and Sodium-Boro-Phosphate Glasses. Atomic Energy 92, 205–209 (2002). https://doi.org/10.1023/A:1016085711708

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  • DOI: https://doi.org/10.1023/A:1016085711708

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