Computer-based data acquisition system for pulse radiolysis studies

Abstract A computer-based system for the study of transient light absorption is described. It automatically subtracts and measures the quiescent light level, digitizes and stores the transient absorption, and monitors the absorption at a reference wavelength. Absorptions as small as 0.1°, in a time domain from a few nanoseconds to several hundred microseconds can be studied, and measurements of both reaction kinetics and absorption spectra are simplified by the use of the system. The system has been developed using commercially available electronic modules and integrated circuits, and is supported by an extensive software package.