Artículos de revistas
Electrical studies and plasma characterization of an atmospheric pressure plasma jet operated at low frequency
Fecha
2013-05Registro en:
Giuliani, Leandro Estanislao; Xaubet Brea, Magalí Noel; Grondona, Diana Elena; Minotti, Fernando Oscar; Kelly, Hector Juan; Electrical studies and plasma characterization of an atmospheric pressure plasma jet operated at low frequency; American Institute of Physics; Physics Of Plasmas; 20; 6; 5-2013; 1-7; 063505
1070-664X
CONICET Digital
CONICET
Autor
Giuliani, Leandro Estanislao
Xaubet Brea, Magalí Noel
Grondona, Diana Elena
Minotti, Fernando Oscar
Kelly, Hector Juan
Resumen
Low-temperature, high-pressure plasma jets have an extensive use in medical and biological applications. Much work has been devoted to study these applications while comparatively fewer studies appear to be directed to the discharge itself. In this work, in order to better understand the kind of electrical discharge and the plasma states existing in those devices, a study of the electrical characteristics of a typical plasma jet, operated at atmospheric pressure, using either air or argon, is reported. It is found that the experimentally determined electrical characteristics are consistent with the model of a thermal arc discharge, with a highly collisional cathode sheet. The only exception is the case of argon at the smallest electrode separation studied, around 1 mm in which case the discharge is better modeled as either a non-thermal arc or a high-pressure glow. Also, variations of the electrical behavior at different gas flow rates are interpreted, consistently with the arc model, in terms of the development of fluid turbulence in the external jet.
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