Emissivity of carbon disulfide explosive combustion products

Conclusions

Anomalous values occur in the emissivity of explosion products of carbon disulfide-oxygen mixtures at relatively low pressures also (p₀=0.03 atm). While within the spectral range of SO+O→SO₂+hν recombination radiation (280–370 nm), in accordance with the results of [2, 3] the value exceeds unity, on the wings of the radiation band ε(λ)≪1.

If nitrogen oxide is employed as an oxidizer instead of oxygen, the limiting emissivity becomes anomalously high in the spectral range of the chemiluminescent reaction NO+O→NO₂+hν.

It is proposed that at low CS₂/O₂ mixture pressure the radiation spectrum “wings” are connected with electron energy levels of SO₂ molecules populated by the mechanisms of thermal multistep activation, due to which their density is less than the thermodynamic equilibrium value.