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Measurement of positron lifetime to probe the mixed molecular states of liquid water

Katsushige Kotera·Tadashi Saito·Taku Yamanaka
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Abstract

Positron lifetime spectra were measured in liquid water at temperatures between 0c and 50c. The long lifetime of ortho-positronium atoms (o-Ps) determined by electron pick-off in molecular substances decreases smoothly by 10% as the temperature is raised. This lifetime temperature dependence can be explained by combining the Ps-bubble model and the mixture state model of liquid water.

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Katsushige Kotera, Tadashi Saito, Taku Yamanaka. 2004-12-29. Measurement of positron lifetime to probe the mixed molecular states of liquid water. https://doi.org/10.1016/j.physleta.2005.07.018

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