Abstract: There is provided an air decontamination system (100). The air decontamination system (100) comprises a conduit for air (110), a pulse generator (130) and a plurality of plasma generation devices (120). The pulse generator (130) is couplable to a power supply and configured to generate a first pulse having a first pulse width of a first predetermined time, thereby controlling airflow between the plurality of plasma generation devices (120) in the conduit (110). The plurality of plasma generation devices (120) is located on two interior surfaces (111, 112) of the conduit (110). Each plasma generation device (120) comprises a high voltage electrode (121) and a ground electrode (122), the electrodes (121, 122) coupled to the pulse generator (130), and a dielectric barrier (123) between the high voltage electrode (121) and the ground electrode (122).

Abstract: Disclosed is an apparatus for controlling a composition of a plasma, comprising a pair of electrodes having a dielectric barrier therebetween, the apparatus further comprising: a temperature control unit in thermal contact with one of the electrodes or the dielectric barrier; a sensor configured to measure a temperature of one of electrodes or the dielectric barrier; a detector configured to determine a concentration of a primary chemical species of the plasma; and a processor configured to control the temperature control unit based on the measured temperature and the determined concentration.