Correlation of orthopositronium annihilation with surface tension in liquids and liquid mixtures

B. Lévay, A. Vértes, P. Hautojärvi

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

The empirical relationship between the pick-off annihilation rate of the orthopositronium atom and the surface tension of molecular liquids published recently by Tao was found to be valid also in binary mixtures of water with methanol and dioxane. With the aid of the surface tension the pick-off rate was correlated with the parachor. From the additivity of the parachor a new additivity rule was derived for the pick-off rate. It is valid for both molecular liquids and binary mixtures. The connection to the parachor indicates also that the square root of the pick-off lifetime is a linear function of temperature and of the inverse of the viscosity. This simple law was found to be compatible with several earlier experimental results.

Original languageEnglish
Pages (from-to)2229-2233
Number of pages5
JournalJournal of Physical Chemistry
Volume77
Issue number18
Publication statusPublished - 1973

Fingerprint

Binary mixtures
Surface tension
interfacial tension
binary mixtures
Liquids
liquids
Methanol
Viscosity
Atoms
Water
methyl alcohol
viscosity
life (durability)
Temperature
water
atoms
temperature
1,4-dioxane

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

Correlation of orthopositronium annihilation with surface tension in liquids and liquid mixtures. / Lévay, B.; Vértes, A.; Hautojärvi, P.

In: Journal of Physical Chemistry, Vol. 77, No. 18, 1973, p. 2229-2233.

Research output: Contribution to journalArticle

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