An experimental method for the study of the effects of magnetic and microwave fields on radical recombination reactions

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Abstract
A general apparatus is described with which the effects of static magnetic fields and microwave fields on the recombination reactions of radicals may be studied. In the latter case the experiment is of the optically-detected electron spin resonance (O.D.E.S.R.) variety in solution and in principle provides a means for identifying radicals very shortly after they are created. A new method which involves creating the radicals repetitively and adding their successive decay signals, obtained with the field on and the field off, in real time in counterphase is shown to be capable of detecting quite small effects. The method is illustrated with preliminary results obtained from a variety of chemical systems in normal and micellar solutions.