Optical emission spectroscopy of the nitrogen post-discharge plasma with metal trace impurity

The bachelor´s thesis deals with the optical emission spectroscopy of the nitrogen post-discharge with metal trace impurity. The analysed sample introduced to the low-temperature plasma was zinc vapor and stannic chloride. As a diagnostic method was choosen optical emission spectroscopy as one of the simplest plasma diagnostic methods. The teoretical part is aimed to information about plasma and processes in the plasma. The special focus is deald for post-discharged plasma and the optical emission spectroscopy. Measurement itself is implemented in flowing regime of DC post-discharge under low pressure. The intensities of selected nitrogen bands and atomic lines are observed as a function of metal vapor presence. The simplified mechanism of the observed phenomen is presented. The possible excitation mechanisms are shown of metallic atoms during the post-discharge