SHORT PULSE ATMOSPHERIC PRESSURE GLOW DISCHARGE METHOD AND APPARATUS

摘要

Method and plasma generating apparatus for generating an atmospheric pressure glow discharge plasma in a treatment space (5) filled with a gas composition. Two electrodes (2, 3) are connected to a power supply (4) for providing electrical power during an on- time (t<SUB>on</SUB>). The power supply (4) is arranged to provide a periodic signal with an on-time (t<SUB>on</SUB>) which is shorter than a predetermined time period, the predetermined time period corresponding substantially to the time necessary for a dust coagulation center from the gas composition to become a cluster in the treatment space (5). This method and apparatus may be used for depositing a layer of material on a substrate (6) in the treatment space (5).