Abstract
Positron annihilation has been studied in samples of lithium disilicate glass heat treated to produce different degrees of internal crystallization. It has been found that the intensity of the longer positron lifetime component (I2) decreases with percentage crystallinity. This decrease can be correlated linearly with the reduction in free volume on crystallization in this system. A decrease in the lifetime, tau 2, with crystallinity has also been observed.
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Schedule a callMore From: Journal of physics. Condensed matter : an Institute of Physics journal
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