The invention concerns a new device based on very short pulsed discharges, generating plasmas balls and plumes over very long distances (up to several meters). These plasma balls are travelling in dielectric guide at the end of which there is generation of an apparent plasma plume like zone (which shape and intensity depend on the discharge repetition rate) wherein secondary mixture plasma can be produced close to a given surface by adding other gas fluxes in the main gas stream. The plasmas balls can be generated in gases at a repetition rate in the range from single shot to multi-kilohertz.