Primary trapping and solvated electron yields. Part 1. Recombination kinetics. Part 2. Correlation between G-value and neutralization efficiency

Abstract

The isothermal decay of luminescence emitted in frozen hydrocarbons as a result of the recombination of trapped electrons with aromatic solute cations has been studied in relation to theoretical models for the primary processes of radiolysis. The kinetics were determined on a time scale extending from ∼20 to 800 ns, with radiations of different LET.

In polar liquids the influence of physical as well as chemical properties of the solvent on the yield G(e^–_solv) at a given time (t= 3 ns) has been investigated: in particular, evidence was found of the existence of a correlation between the survival probability of e^–_solv and the efficiency factor of the e^–_solv-cation recombination, which had so far been assumed to be limited only by diffusion.