The formation and annihilation of thermalized orthopositronium in micellar systems as a function of the concentration of the micelles has been analyzed for both aqueous and nonpolar (reversed micelles) solutions. The analysis is based on the assumption of the formation of two precursors of orthopositronium of which only one precursor is inhibited by the micelles. This assumption is verified in aqueous solutions whereas in nonpolar solvents the question remains whether this might be due to simultaneous enhancement and inhibition of positronium formation. The trend which the rate constants of inhibition in aqueous and nonpolar solvents exhibit is explained in terms of a "two-precursor" model.
ASJC Scopus subject areas
- Engineering (all)
- Physical and Theoretical Chemistry