In this experimental work, the physical and electrical characteristics of a fabricated positive DC corona jet are analysed. The designed plasma jet operates with the direct current (DC) applied voltage and \(\hbox {Ar}/\hbox {CO}_{2}\) mixture at the atmospheric pressure (760 Torr). The emitted spectra are analysed by the optical emission spectroscopy technique. Then, the rotational, vibrational and excitation temperatures, electron density and \(\hbox {CO}_{2}\) dissociation degrees are obtained. Besides, using the actinometry method, the carbon dioxide dissociation process is studied. The \(\hbox {CO}_{2}\) excitation and ionisation from \(X^{2}\Pi _{g}\rightarrow A^{2}\Pi _{u}\) transitions along with the OH emission band from the \(\mathrm {A}^{2}\Sigma \rightarrow \mathrm {X}^{2}\Pi \) transitions are detected. It is seen that at all the temperatures, electron number density and \(\hbox {CO}_{2}\) dissociation to CO, \(\hbox {O}_{2}\) and O species are increased at higher input electrical currents

在这项实验工作中，分析了制造的正直流电晕喷嘴的物理和电气特性。设计的等离子流在大气压力（760 Torr）下，以直流（DC）施加的电压和\（\ hbox {Ar} / \ hbox {CO} _ {2} \）混合物运行。发射光谱通过光发射光谱技术进行分析。然后，获得旋转，振动和激发温度，电子密度和\（\ hbox {CO} _ {2} \）的解离度。此外，采用光度法研究了二氧化碳的离解过程。的\（\ hbox中{CO} _ {2} \）的激发和电离从\（X ^ {2} \裨_ {G} \ RIGHTARROW甲^ {2} \裨_ {U】\）检测到\（\ mathrm {A} ^ {2} \ Sigma \ rightarrow \ mathrm {X} ^ {2} \ Pi \）跃迁中的跃迁以及OH发射带。可以看出，在所有温度下，电子数密度和\（\ hbox {CO} _ {2} \）分解为CO，\（\ hbox {O} _ {2} \）和O的种类在较高温度下都增加了。输入电流