METHODS FOR THE ANALYSIS OF TRANSIENT ABSORBENCY DATA

Procedures for the generation and collection of transient UV-visible a bsorbance data are briefly reviewed. Problems associated with signal g eneration (scattered light, inhomogeneous distribution of transients, instability of pulsed light sources), signal detection (averaging, fil tering), and signal analysis in kinetic and spectrographic flash photo lysis are addressed. Methodology for the fitting of model functions to absorbance data that depend on up to three variables (time, wavelengt h and, e.g., temperature) is discussed.