One atmospheric pressure plasma jet with two modes at a frequency of several tens kHz

Abstract

Alfvén's critical ionization velocity observed in high power impulse magnetron sputtering discharges Phys. Plasmas 19, 093505 (2012) Revisiting plasma hysteresis with an electronically compensated Langmuir probe Rev. Sci. Instrum. 83, 093504 (2012) Coded aperture imaging of fusion source in a plasma focus operated with pure D2 and a D2-Kr gas admixture Appl. Phys. Lett. 101, 114104 (2012) EBT2 dosimetry of x-rays produced by the electron beam from a Plasma Focus for medical applications J. Appl. Phys. 112, 054901 (2012) Device convolution effects on the collective scattering signal of the E×B mode from Hall thruster experiments: 2D dispersion relation This paper reports an experimental study of a plasma jet by using optical measurement and spectroscopic method. The plasma jet, composed of an inner electrode with a sharpen end and an outer water-electrode, has a cross-field configuration. A cross-field mode of the plasma jet is realized when the applied voltage is low. However, a different mechanism of plasma plume generation is involved when the applied voltage is high enough, and a linear-field mode of the plasma jet can be realized. The two different modes of the plasma jet are compared by spectroscopic method and results show that electron energy in linear-filed mode is higher than that in cross-field mode.

Effects of the electrical excitation signal parameters on the geometry of an argon-based non-thermal atmospheric pressure plasma jet

“…The shape of the plasma jet obtained at 10 kV by varying the signal frequency from 20 to 30 kHz is close to that observed by Nie et al [ 15 ] and Li et al [ 16 ] on the plasma jet of argon gas for an applied voltage and a signal frequency of 2.7 kV, 48 kHz and 2.6 kV, 40 kHz, respectively, and by Kim et al [ 17 ] and Jiang et al [ 18 ] on the plasma jet of helium gas for an applied voltage and a signal frequency of 1.2 kV, 50 kHz and 9 kV, 17 kHz, respectively.…”

Comparison of two cold atmospheric pressure plasma jet configurations in argon

“…This is in accordance with previous studies of Ar plasma jets ignited with kHz frequency sinusoidal voltage. According to other studies with various CAPJ configurations, CAPJ I could be sustained at considerably lower voltages in the range of 1-4 kV [27,39,40] when compared to the CAPJ II with sustaining voltages in the range of 7-10 kV. [32,41] Somewhat higher sustaining voltages for CAPJ II obtained in present study may be explained by the smaller dielectric tube diameter.…”

Intense and Energetic Atmospheric Pressure Plasma Jet Arrays

“…OES is a non‐invasive method for investigating atoms, ions, and molecules in a plasma media 26–28. Its diagnostic use for emitting media has yielded a greater understanding of very complex phenomena such as high gas pressure plasmas 29.…”