Radiolysis of silver ion solutions in ethylene glycol: solvated electron and radical scavenging yields

In contrast, the γ-radiolysis reduction yield of Ag+ into clusters is dose-dependent, changing from Gi(Agn)=(2.5±0.5)×10−7 mol J−1 at low dose to Gmax(Agn)=(7.5±0.5)×10−7 mol J−1 at higher doses, when clusters accumulate. Silver cations adsorbed on clusters are able to scavenge the ethylene glycol radicals, which also contribute to their reduction for a part of Grad=(5.8±0.5)×10−7 mol J−1. Considering the different ways the reducing radicals can be produced, it is concluded that they originate from the electron-cation recombination and from the cation-ethylene glycol reaction, but that the dissociation of excited states is a negligible path. The formation mechanisms of the radicals and the rate constants in ethylene glycol are compared with those in water and methanol.