A technique for the spectroscopic observation of transient species (excited-state molecular entities or reactive intermediates) generated by a pulse of short duration.
See also: flash photolysis, time-resolved spectroscopy
Source:
PAC, 1996, 68, 2223. 'Glossary of terms used in photochemistry (IUPAC Recommendations 1996)' on page 2280 (https://doi.org/10.1351/pac199668122223)