Abstract
WE have been investigating the radiolysis of aqueous eosin induced by 1 µsec pulses of 33-MeV electrons from a Linac accelerator at approximately 1,200 rads per pulse. The flash spectra were taken on a Hilger E498 quartz prism spectrograph by synchronizing a 15 µsec (overall) flash from an E.G. and G. type FX-33 flash-tube to give a minimum 5 µsec peak-to-peak time delay. The rate data were obtained by measuring the transmission transients in narrow wave-length bands by means of photoelectric detection and oscilloscope display, with an Osram XBO-450 xenon arc as the monitoring lamp. The irradiations were performed in a 5-cm long fused-silica cell, located in a two-pass optical system, which could be evacuated to 2 × 10−6 mm mercury. The solutions were prepared with chromatographically purified eosin–sodium in triply distilled water and C.P. grade chemicals.
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