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Abstracts
A relation between positronium annihilation characteristics and concentration of elementary free volumes is considered for the case of positronium formation before its localization. We estimated the diffusion coefficient of nonlocalized positronium (≈10^{-4} cm^{2}/s). The positron annihilation lifetime studies of uniaxial compression and annealing of some glassy polymers revealed variations of the shape of elementary free volumes size-distributions.
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Year
Volume
Issue
Pages
659-662
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Dates
published
1999-04
Contributors
author
- Semenov Institute of Chemical Physics, Russian Academy of Sciences, 4 Kosygina str., 117334, Moscow, Russia
author
- Institute of General Physics, Russian Academy of Sciences, 38 Vavilov str., 117942, Moscow, Russia
author
- Semenov Institute of Chemical Physics, Russian Academy of Sciences, 4 Kosygina str., 117334, Moscow, Russia
author
- Semenov Institute of Chemical Physics, Russian Academy of Sciences, 4 Kosygina str., 117334, Moscow, Russia
author
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
References
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YADDA identifier
bwmeta1.element.bwnjournal-article-appv95z438kz