Correlation of phase resolved current, emission and surface charge measurements in an atmospheric pressure helium jetTorsten Gerling, Robert Wild, Andrei Vasile Nastuta, Christian Wilke, Klaus-Dieter Weltmann and Lars StollenwerkEur. Phys. J. Appl. Phys., 71 2 (2015) 20808DOI: https://doi.org/10.1051/epjap/2015150056