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arXiv · 1203.5390

Positronium in a liquid phase: formation, bubble state and chemical reactions

Sergey V. Stepanov·Vsevolod M. Byakov·Dmitrii S. Zvezhinskiy·Gilles Duplatre·Roman R. Nurmukhametov·Petr S. Stepanov
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Abstract

This chapter reviews the following items: 1. Energy deposition and track structure of fast positrons: ionization slowing down, number of ion-electron pairs, typical sizes, thermalization, electrostatic interaction between e+ and its blob, effect of local heating; 2. Positronium formation in condensed media: the Ore model, quasifree Ps state, intratrack mechanism of Ps formation; 3. Fast intratrack diffusion-controlled reactions: Ps oxidation and ortho-para conversion by radiolytic products, reaction rate constants, interpretation of the PAL spectra in water at different temperatures; 4. Ps bubble models. "Non-point" positronium: wave function, energy contributions, relationship between the pick-off annihilation rate and the bubble radius.

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Sergey V. Stepanov, Vsevolod M. Byakov, Dmitrii S. Zvezhinskiy, Gilles Duplatre, Roman R. Nurmukhametov, Petr S. Stepanov. 2012-03-24. Positronium in a liquid phase: formation, bubble state and chemical reactions. https://doi.org/10.1155/2012%2F431962

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