Behavior of helium release from simulated radioactive waste glasses

Seichi Sato, Hirotaka Furuya, Koshi Morikawa, Masayasu Sugisaki, Yaohiro Inagaki

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Rates of He release from two kinds of simulated high-level radioactive waste glasses were measured in the temperature range from 573 to 753K by a mass spectrometric method. Diffusion coefficients of He in the glasses were determined from the fractional release data. The diffusion coefficients were given as a function of temperature by the equations: D/(m2·s-1) = 2.3 × 10-6 exp (-71.1±2.1 kJ/RT) for P0798 glass =9.8 × 10-7 exp (-60.2±2.1 kJ/RT) for P0504 glass. In addition, solubilities of He in the glasses were determined from the measurement of the total amount of released He and found to be S/(atoms/m3) = 2.0 × 1022 for P0798 glass = 2.2 × 1022 for P0504 glass. at 693 K and 1.7 × 105 Pa He. The diffusivities and solubilities of He in the glasses were, respectively, several and an order of magnitude lower than silica, alkali silicate and Pyrex glasses, which properties are notable for the radioactive waste glasses.

Original languageEnglish
Pages (from-to)343-349
Number of pages7
Journaljournal of nuclear science and technology
Issue number4
Publication statusPublished - Apr 1990


All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering

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