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Plasma Medicine
SJR: 0.271 SNIP: 0.316 CiteScore™: 1.9

ISSN Печать: 1947-5764
ISSN Онлайн: 1947-5772

Plasma Medicine

DOI: 10.1615/PlasmaMed.2016015850
pages 21-31

Novel Plasma Source Based on Pin-Hole Discharge Configuration

Frantisek Krcma
Faculty of Chemistry, Brno University of Technology, 612 00 Brno, Czech Republic
Edita Klimova
Faculty of Chemistry, Brno University of Technology, Brno, Czech Republic
Vera Mazankova
Faculty of Chemistry, Brno University of Technology, Brno, Czech Republic
Lukas Dostal
Faculty of Electrical Engineering and Communication, Brno University of Technology, Brno, Czech Republic
Bratislav Obradovic
Faculty of Physics, University of Belgrade, Belgrade, Serbia
Anton Nikiforov
Department of Applied Physics, Ghent University, Ghent, Belgium
Patrick Vanraes
Department of Applied Physics, Ghent University, Ghent, Belgium

Краткое описание

A novel plasma source based on the pin-hole discharge configuration is presented. This simple source configuration allows operation at an applied voltage from 1 kV using direct current, alternating current, high frequency, as well as radiofrequency power supplies. The presented prototype consists of a dielectric body from Macor ceramics and a tungsten high-voltage inner electrode. The second electrode can be made of different materials and can be mounted in a coaxial configuration or placed anywhere in the liquid. The distance between the inner electrode tip and the nozzle in the ceramics is adjustable. The source operates in conductive solutions with a conductivity in the range of 100−15,000 µS/cm. The discharge itself shows self-pulsing operation with short, spark-like pulses of extremely high energy density (>100 kW/mm3), producing strong acoustic waves. Although the device was originally developed for cleaning the surfaces of ancient archaeological objects, its properties also allow applications in biomedicine.


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