Determination of a fraction of spin-correlated radical ion pairs in irradiated alkanes by quantum oscillation technique

Autor: B.M. Tadjikov, Yu. N. Molin, V.M. Grigoryants, O. M. Usov
Rok vydání: 1997
Předmět:
Zdroj: Radiation Physics and Chemistry. 49:237-243
ISSN: 0969-806X
DOI: 10.1016/s0969-806x(96)00141-7
Popis: Amplitudes of quantum oscillations observed in the recombination fluorescence of the (diphenylsulfide-d10)+/(p-terphenyll-d14)− radical ion pairs in alkanene solutions have been used to estimate a fraction of spin-correlated singlet pairs Θ in the radiation track. Θ values of 0.36 – 0.54 for the solvent series studied were found. Values for a fraction of singlet recombinations fs (0.52–0.66), calculated from Θ values, are in satisfactory agreement with those available from literature. It has been observed that Θ and fs values decrease with increasing solvent viscosity (from n-hexane to cis-decalin).
Databáze: OpenAIRE