| The effect of X = 308nm laser radiation on the decomposition reaction has been studied. Carbonization on cell windows has been investigated, which revealed that a small amount of oxygen in the reaction chamber was the main cause of the carbonization. A molecular crystal which was proved to be the precursor of the carbonization has been found. Oscillation in light absorption caused by photochemical reaction was observed,and the phenomenon was re-demonstrated in the chain reaction system of 1,2—dichloroethane. Theoretical analysis showed that the oscillation was the characteristic of chain reaction with illumination. A mechanism including both unimolecular and chain reaction channel has been proposed for the decomposition of 1,2—dichloropropane. |
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