Abstract
A more detailed examination of the radiation chemistry of benzene-iodine solutions was undertaken in order to examine the suitability of iodine as a radical detector in aromatic systems. The changes which occurred in the absorption spectrum of a 4 x 10/sup -3/ M solution of iodine in benzene during and after a 5 microampere fast electron bombardment are illustrated. A darkening through shades of gray and dark green was observed. Upon further standing the absorption did not increase and was unaffected by light in the absence of air. After exposure of the sample to air the coloring faded very quickly in bright sunlight. The color of the aerated sample was reasonably stable when stored in the dark. The nature of the colored substance formed is unknown. A large number of Co/sup 60/ gamma irradiations were also carried out at various iodine concentrations. (P.C.H.)
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