Project Area A Transient Plasmas
Project Area A addresses the fundamentals of non-equilibrium transient atmospheric plasmas on timescales between nanoseconds and seconds. This is illustrated in Figure 1.8 by describing the important timescales for the various physical systems such as plasma excitation on the nanosecond scale, the conversion of the electronic excitation in ro-vib states on the nanosecond to microsecond scale and the possible quenching by gas phase collisions. Finally, the species follow the flow patterns to the confining surfaces on the timescale of milliseconds to seconds. Those questions need to be addressed by combining expertise in the Physics of transient plasmas, atomic and molecular physics covering the excitation and de-excitation as well as the non-equilibrium chemistry and surface physics of the interaction of those species with for example catalyst surfaces.
The projects A1, A2, A3 cover the electronic, vibrational and rotational excitation of the species in ns-plasmas and RF plasmas. Project A4 deals with plasma excitation using variable waveform tailoring in RF driven plasma jets using microstuctured electrodes. Projects A5 and A6 address the transfer of ns-plasmas to dielectric barrier discharges either as 2D-filamentary discharges or as controllable plasma pixel arrays. A7 covers the Transfer of excitation including the interaction with catalytic surfaces. A8 and A9 address the modelling of the nonequilibrium chemistry and the transport of species.