Spatial Distribution of $\hbox {C}_{2}$ Spectra From Induction Thermal Plasmas With Polymer Powder Injection

The influence of polymer ablation on thermal plasmas was fundamentally investigated by using the induction thermal plasma technique. Polymer powders were directly subjected to Ar-induction thermal plasmas. A high-speed video camera, with a bandpass filter, was used to measure the spatial distribution of the spectral radiation intensity of C₂ molecules included in the polymer-ablated vapor. Numerical prediction was also undertaken to obtain the C₂ molecular fraction distribution. Results directly show the mixing aspects of polymer-ablated vapor with thermal plasmas.