Abstract

The spur model of muonium formation is reviewed. It describes how the chemical fate of the muon in water and aqueous solutions is determined by reactions with transient species created in the terminal spur of the muon track. New results on muonium inhibition in aqueous solutions of chromate are presented. Quantitative analysis of these and earlier results is performed using the method of competition kinetics. The predicted straight line relationship between the inverse fraction of muonium inhibited and the inverse concentration of electron scavenger is obeyed, and rate constant ratios are derived from the slopes of the plots. It is shown how differences in these ratios might be due to selective reactions with electrons varying in their degree of solvation.

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