Flame propagation in chlorine-containing combustible systems under ignition by a constant light beam

The action of the light emission of a mercury–quartz lamp on combustible mixtures of chlorine and difluoromethane and hydrogen at atmospheric pressure increases the upper concentration limit of flame propagation and flame velocity in mixtures similar in concentration to the upper concentration limit, because, during flame propagation in these mixtures, the rates of the thermal and photochemical dissociation of chlorine molecules are comparable, and the chlorine concentration behind the flame front is minimum.