Abstract
Abstract Positron lifetime spectra have been obtained as a function of temperature for various solid mixtures of n-eicosane (C20H42) and n-docosane (C22H46). These compounds, when mixed in various proportions, are known1 to form at least six distinct solid phases. Positron lifetime parameters T 2 and I 2 have been measured in each of these phases and are found to exhibit both a temperature and a phase dependence. Comparison with crystallographic data reveals that t 2 variations in the n-eicosane: n-docosane system depend more strongly on the lattice dimensions a and b than on the dimension c.
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