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Modified Positron Annihilation Model for Glassy-Like As_2Se_3

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Kozdras A., Shpotyuk O., Kovalskiy A., Filipecki J.
Acta Physica Polonica A
|
2005
|
vol. 107
|
issue 5
832-836
EN
An approach to structural characterization of chalcogenide glasses based on the study of void distribution is discussed. The results of positron annihilation lifetime spectra measurements for glassy-like g-As_2Se_3 are compared with nano-void distribution data obtained from Monte Carlo simulation. In this consideration perspectives to involve the parameters of nano-voids calculated from the first sharp diffraction peak in the framework of known Elliott's model are analyzed.
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