Abstract
The induction zone of shock-initiated explosions of carbon disulfide-oxygen-argon mixtures was studied using the reflected wave end-on method. Profiles of chemiluminescence at 490 nm, attributed to SO2o, and infrared emission at 5 μm, attributed to CS2 and CO, were analyzed to deterrine the characteristic branched-chain growth rates and ignition delay times over the temperature range 1400–2100 K for CS2:O2 ratios varying from 1:9 to 3:10 with various dilutions in argon. Computer modelling in terms of a conventional mechanisms for the CS2−O2 reaction was able to account for the ignition delay times under a variety of assumptions about the high temperature rate constants, but no adjustments of the mechanism or the rate constants were found that were capable of giving satisfactorily correct models of the qualitative forms of the visible emission profiles or the mixture dependence of the growth rates.
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