Title :
Dense Gas Discharge With Runaway Electrons as a New Plasma Source for Surface Modification and Treatment
Author :
Maltsev, Anatoly Nikolaevich
Author_Institution :
Inst. of Atmos. Opt., Tomsk
Abstract :
Experimental results on runaway electron generation with an energy of 20-350 keV at nanosecond discharge in air under normal conditions are presented. Physical conditions are specified for the efficient generation of runaway electrons in dense gas using this type of discharge. A subrelativistic electron beam is obtained in air under normal conditions with an output aperture of 4times33 cm2 and a current amplitude of 2 kA. Experimental results on atmospheric discharge with runaway electrons (ADRE) application for bacteria decontamination on the surface of solid states including the inside of tight polymeric packings are described. Essentially, a higher surface sterilization capacity by the ADRE (with energy up to 300 keV and current amplitude up to 700 A) in comparison with other types of discharges is obtained. The basic biophysical mechanisms determining the ADRE sterilization futures are discussed
Keywords :
biological techniques; discharges (electric); microorganisms; plasma materials processing; plasma sources; plasma-beam interactions; polymers; relativistic electron beams; surface treatment; 2 kA; 20 to 350 keV; 700 A; atmospheric discharge; bacteria decontamination; biophysical mechanisms; dense gas discharge; plasma source; polymeric packings; runaway electrons; subrelativistic electron beam; surface sterilization; surface treatment; Apertures; Decontamination; Electron beams; Fault location; Microorganisms; Plasma sources; Polymers; Solid state circuits; Surface discharges; Surface treatment; Bacteria decontamination; gas discharges; plasma sources; runaway electron beams; surface treatment;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2006.878994
