Flash photolysis

Flash photolysis is a technique used in spectroscopy and photochemistry to study rapid chemical reactions and dynamics. It involves the use of a brief, intense flash of light (typically ultraviolet or visible light) to initiate a chemical reaction or to excite molecules from a ground state to an excited state. The general procedure includes the following steps: 1. **Preparation**: A sample containing the chemical species of interest is prepared in a suitable medium, such as a gas or liquid.