The Effect of Intermittent Light on a Chain Reaction with Bimolecular and Unimolecular Chainhyphen;Breaking Steps

摘要

The effect of intermittent light, as produced by a rotating sector, has been considered for a chain reaction having the following mechanism:A2plus;hngr;rarr;2A,Aplus;Brarr;Cplus;A,2Ararr;stable products,Ararr;stable products.It has been shown how to calculate the reaction rate as a function of the sector speed for different values of a certain parameter which depends on the individual rate constants and the light intensity and gives, essentially, the relative importance of the bimolecular and unimolecular chainhyphen;breaking steps. The relationships have been exhibited graphically for the case in which onehyphen;fourth of the sector passes the light beam. These relationships may be reversed, making it possible to obtain the rate constants of the intermediate reactions from measurements with intermittent light.