Abstract
The dynamics of the growth of the positronium bubble is considered in hydrodynamic approach. Driving force of the process is the exchange repulsion of the e − constituting Ps from the electrons of the surrounding molecules. Intermolecular forces (Laplace pressure) and friction forces (viscosity) hinder the bubble growth. Numerical calculations are done for a number of liquids having very different surface tensions and viscosities. In liquid He and glycerol the Ps bubble formation time is comparable or even exceeds the para-Ps lifetime.
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