Other One-Radical Models and Limitations

Chapter 7 Spur Theory of Radiation Chemical Yields 

FIGURE 7.2 Relative molecular yields of H2 and H202 in the radiolysis of aqueous solutions (Schwarz, 1955). Full curve is theoretical for solute concentrations (X axis) in different experiments multiplied by suitable normalization factors. Notice that even after normalization experimental points remain considerably higher than theoretical at high concentrations (x 0.1). From Schwarz (1955), with permission of Am. Chem. Soc.  

The main problem with 1-radical models is that they are chemically unrealistic. The distinction between oxidizing and reducing species is not recognized, and different rate and diffusion coefficients must be lumped into one. 

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