  The aim of this work is to investigate the effects of customized electrodes
on the electron heating dynamics of the COST-Jet. The COST-Jet is operated with
an applied sinusoidal alternating voltage of 13.56 MHz. With the help of phase
resolved optical emission spectroscopy (PROES), the electron heating dynamics
in the plasma discharge for customized electrodes, gas mixtures and applied
voltage amplitudes are examined. The absolute densities of atomic oxygen are
then examined using two photon laser induced fluorescence spectroscopy (TALIF)
in order to obtain information on the production of reactive particles
depending on the different electrode materials and structures.
