This study is designed to explore the two dimensional temperature maps of the atmospheric argon discharge consisting of pin-to-plane electrodes supplied by a high voltage DC source. After checking the stability of the micro discharge, the two dimensional image plane focused by a quartz lens was scanned by the fiber probe driven by a 3D Mobile Platform. The rotational and vibrational temperatures are calculated using nitrogen emissions collected by the high resolution spectrometer and high sensitive intensified charge coupled device (ICCD). The rotational temperature varies from 1558.15 K to 2621.14 K and vibrational temperature varies from 3010.38 K to 3774.69 K, indicating a great temperature gradient due to small discharge size. The temperature maps show a lateral expansion and a sharp truncation in the radial direction. A double layers discharge is identified, where an arc discharge coats the glow discharge.

翻译：这项研究旨在探索由高电压源DC提供的由针形至平面电极构成的大气弧排放的两维温度图。在检查微排放的稳定性之后,由3D移动平台驱动的纤维探测器扫描了以石英镜头为焦点的两维图像平面。旋转温度和振动温度是用高分辨率光谱仪和高敏感强化充电结合装置(ICCD)收集的氮排放计算出来的。旋转温度从1558.15K到2621.14K不等,振动温度从3010.38K到3774.69K不等,这表明由于小排放大小而具有很大的温度梯度。温度图显示射线方向的横向扩张和急电突变。温度图显示双层排放,弧放电使光散发。