Title :
Electron energy distribution function measurements in a low pressure expanding jet plasma
Author :
Pessoa, R.S. ; Toneli, David A. ; Roberto, Marisa ; Petraconi, Gilberto ; Maciel, H.S.
Author_Institution :
Technol. Inst. of Aeronaut., São José dos Campos, Brazil
Abstract :
In this paper, we report on the existence of two electron temperature populations in the low pressure expanding dc plasma jet through the investigation of the spatial evolution of EEDF measured by a single Langmuir probe system. It was observed that for argon the plasma jet is Maxwellian type in all discharge axes. However, when an electronegative gas was inserted/replaced the EEDF turns “two-temperature” Maxwellian type or is deformed, increasing the high energy electron population. Finally, the effect of gas discharge power shows different behaviors when an electropositive gas was replaced by an electronegative gas.
Keywords :
Langmuir probes; argon; deformation; discharges (electric); energy measurement; plasma jets; plasma transport processes; Ar; EEDF spatial evolution; Langmuir probe system; deformation; discharge axes; electron energy distribution function measurement; electronegative gas; electropositive gas; gas discharge power effect; low pressure expanding dc plasma jet; two-temperature Maxwellian type; Argon; Discharges (electric); Fault location; Plasmas; Probes; Temperature measurement;
Conference_Titel :
Pulsed Power Conference (PPC), 2013 19th IEEE
Conference_Location :
San Francisco, CA
DOI :
10.1109/PPC.2013.6627467