A Catalytic Sensor for Measurement of Radical Density in CO2 Plasmas
AbstractA catalytic sensor for the measurement of radical density in weakly ionized CO2 plasmas, created in a low-pressure electrodeless discharge, is presented. The CO2 plasma was created in a 4 cm wide borosilicate glass tube inside a copper coil connected to a radio frequency generator operating at 27.12 MHz with a nominal power of 250 W. The dissociation fraction of the CO2 molecules was measured in the early afterglow at pressures ranging from 10 Pa to 100 Pa, and at distances of up to 35 cm along the gas stream from the glowing plasma. The radical density peaked (2 × 1020 m–3) at 80 Pa. The density quickly decreased with increasing distance from the glowing plasma despite a rather large drift velocity. The dissociation fraction showed similar behavior, except that the maximum was obtained at somewhat lower pressure. The results were explained by rather intense surface recombination of radicals. View Full-Text
Scifeed alert for new publicationsNever miss any articles matching your research from any publisher
- Get alerts for new papers matching your research
- Find out the new papers from selected authors
- Updated daily for 49'000+ journals and 6000+ publishers
- Define your Scifeed now
Vesel, A.; Zaplotnik, R.; Iacono, J.; Balat-Pichelin, M.; Mozetic, M. A Catalytic Sensor for Measurement of Radical Density in CO2 Plasmas. Sensors 2012, 12, 16168-16181.
Vesel A, Zaplotnik R, Iacono J, Balat-Pichelin M, Mozetic M. A Catalytic Sensor for Measurement of Radical Density in CO2 Plasmas. Sensors. 2012; 12(12):16168-16181.Chicago/Turabian Style
Vesel, Alenka; Zaplotnik, Rok; Iacono, Jonathan; Balat-Pichelin, Marianne; Mozetic, Miran. 2012. "A Catalytic Sensor for Measurement of Radical Density in CO2 Plasmas." Sensors 12, no. 12: 16168-16181.