AVS 51st International Symposium
    Plasma Science and Technology Thursday Sessions
       Session PS-ThM

Paper PS-ThM4
Characterization of the Cold Atmospheric Plasma Hybrid Source

Thursday, November 18, 2004, 9:20 am, Room 213A

Session: Atmospheric and Microdischarges
Presenter: H. Barankova, Uppsala University, Sweden
Authors: L. Bardos, Uppsala University, Sweden
H. Barankova, Uppsala University, Sweden
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Parameters of the Hybrid Hollow Electrode Activated Discharge (H-HEAD) source for cold atmospheric plasma applications will be described. The source with a simple cylindrical electrode terminated by a gas nozzle combines the microwave antenna plasma with the hollow cathode plasma generated inside the nozzle by pulsed DC power. The source is capable to produce over 15 centimeters long plasma plume at less than 500 sccm of the argon flow in open air and the microwave power of 500 W (2.4 GHz). Parameters of the hybrid plasma are controlled by both the microwave power and the power delivered to the hollow cathode. An anomalous effect of local maximum in the length of plasma plume at low gas flows is described. Results of the optical emission spectroscopy in argon and neon and electrical parameters of the hybrid discharge will be presented.