Kiel 2004 – wissenschaftliches Programm
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P: Plasmaphysik
P 10: Postersitzung: Niedertemperaturplasmen Plasmatechnologie II, Staubige Plasmen II, Magnetischer Einschluss II
P 10.14: Poster
Dienstag, 9. März 2004, 17:45–19:30, Foyer
Spectral investigation of a radio frequency plasma jet operating from low to high pressure — •Dragos Liviu Crintea1,2, Cristina Petcu2, Sorin Vizireanu2, Andrada Lazea2, Bogdana Mitu2, and G. Dinescu2 — 1Insitut für Experimentalphysik V, Ruhr Universität Bochum, Germany — 2Low Temperature Plasma Physics Department, National Institute for Laser, Plasma and Radiation Physics, Bucharest, Romania
A radiofrequency plasma jet source has been developed, operating in the pressure domain, from low (10−2 mbar) up to atmospheric pressure. The plasma spatial distribution and plasma color are strongly dependent upon pressure and mass flow. Spectral studies of the jet and images taken by a digital camera when passing from low pressure to high pressure regimes are presented and discussed. Special emphasis is on the role played by pressure and mass flow on the operation of the source. Simulation of molecular spectra and comparison with experimental data has been applied in order to determine the molecular temperature. We focus on the N2 SPS and γ NO spectral systems for the spectral analysis. The contribution of electronic processes to spectra excitation is discussed.