Propagation of a chemical-reaction wave under UV radiation

The formation and propagation of a photochemical-reaction wave were studied. The condition for propagation is the “brightening” of reaction products. The wave velocity is in direct proportion to the product of the quantum yield by the light intensity and in inverse proportion to the concentration of an absorbing reagent. The time during which a steady-state regime was reached was estimated. Transition of a photochemical wave to a steady state was analyzed. The influence of a periodic variation of light intensity on wave propagation was studied. Examples of photochemical-reaction waves were considered.