A strong difference in the character of admixture effect on ignition by shock wave and spark initiation has been revealed using the haloalkane effect on the ignition of methane–oxygen mixtures as an example. It has been shown that the difference is determined by the presence of considerable concentrations of reactive intermediate species in an initial mixture, the qualitative difference in gas heating modes, and the strong difference between the temperature ranges of the processfor two these methods.

中文翻译：

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卤代烷对甲烷-氧气混合物点火浓度极限和诱导时间的影响特征

以卤代烷烃对甲烷-氧气混合物点火的影响为例，揭示了外加剂对冲击波和火花引发点火的特征的强烈差异。已经表明，这种差异是由初始混合物中存在相当浓度的活性中间体、气体加热模式的质量差异以及这两种方法的过程温度范围之间的巨大差异所决定的。