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Positronium As A Probe Of Small Free Volumes In Crystals, Polymers And Porous Media

Tomasz Goworek

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AbstractPositronium (a hydrogen-like bound state of an electron and a positron) is a convenient probe to determine the sizes of subnanometric free volumes (voids) in condensed matter. A review of experimental methods used in positron spectroscopy and examples of their application to the free volume studies are presented.