Spur decay of the solvated electron in picosecond radiolysis measured withtime-correlated absorption spectroscopy

Spur decay kinetics of the hydrated electron following picosecond pulse rad iolysis of water have been measured using a time-correlated transient absor ption technique with an asynchronous mode-locked laser. The 11 us time wind ow afforded by this signal-averaging technique is ideal to match up with mo re: conventional transient absorption measurements taken to microsecond tim e scales. The precise data recorded in this study require a revision downwa rd of the "time zero" solvated electron yield to approximately 4.0 per 100 eV of energy absorbed, to match the best available scavenger product measur ements.