10.18453/rosdok_id00002392 Khakpour, Alireza Alireza Khakpour http://d-nb.info/gnd/1176446886 https://orcid.org/0000-0003-2803-5283 Universität Rostock 2018 620 Engineering & allied operations 621.3 Electrical Engineering, Electronics 2018 en http://purl.uni-rostock.de/rosdok/id00002392 urn:nbn:de:gbv:28-rosdok_id00002392-2 The goal of the work is to investigate the high-current anode phenomena using spectroscopic methods as well as electrical measurements. Different current waveforms and vacuum interrupter properties on the formation of high-current anode phenomena are investigated. Optical emission spectroscopy combined with high-speed camera imaging is used to investigate the temporal and spatial distribution of different species during discharge modes. The ground state density of Cr I before and after current zero is calculated. A new electric arc model based on the existence diagram is proposed.