ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Effect of Added Water on the Radiolytic Hydrogen Yield and the Positronium Formation Probability in Liquid Dioxane

V. M. Byakov, V. I. Grafutin, and O. V. Ilyukhina

Institute of Theoretical and Experimental Physics, Moscow, 117259, Russia

Abstract: ortho-Ps intensity measurements were made in dioxane-water mixtures (DWM) over wide concentration ranges, the purpose was to compare the changes in radiolytic hydrogen yield and o-Ps formation probability when dioxane is replaced by water. Water leads to a partial inhibiting of Ps formation and enhances the H₂ yield. The results point to the possibility of understanding H₂ and Ps formation in DWM on the basis of the previously formulated unified model for positronium and radiolytic hydrogen formation, if structure peculiarities of DWM are taken into account. The arguments are given that the influence of added water on the hydrogen formation in the radiolysis of DWM is not associated with the proton transfer from radical cations of dioxane to water molecules, but due to the capture of quasi-free electrons escaped the intratrack recombination with ions by water clusters took place in dioxane solutions of water.

Full paper in Portable Document Format: 502a45.pdf

Chemical Papers 50 (2) 45–49 (1996)