photolyse

Traductions

• anglais

  Date : 1990

  Définition

  Decomposition of molecules by the absorption of light energy.

  Note :

  Photolysis can be regarded as the opposite of photosynthesis. Flash photolysis is a method of investigating the mechanism of extremely rapid photochemical reactions involving the formation of free radicals (both inorganic and organic). This is done by irradiating a given reaction mixture with a flash of high-intensity light; this excites the molecules and produces the short-lived radicals which activate photochemical reactions. These products are instantaneously analyzed spectroscopically, which permits identification of the radical species from the spectra obtained. The time lapses involved in this technique are about 1/100,000th second. It has also been applied to study of the exceedingly fast reactions occurring in flames and explosions.

  Terme :

  1. photolysis