Plasma propagation speed and electron temperature of ar and N2 in atmospheric pressure non-thermal bioplasma jet

Summary form only given. Space and time resolved discharge images from an atmospheric pressure non-thermal bioplasma jet have been observed by a high-speed single-frame camera to investigate the electron temperatures. The Ar and Ar/N₂ plasma propagation speed with the group velocity in the plasma column of jet has been shown to be about 3.4-4.8 km/s of the early part, and about 1.2-1.5 km/s of the late part of plasma exposure with an input discharge voltage of 3.0 kV and driving frequency of about 44 kHz. Particularly, the electron temperature in atmospheric pressure non-thermal bioplasma jet were found to be about 4.9-9.8 eV of the early part, and about 0.6-1.0 eV of the late part of plasma exposure, respectively. Implications of the results and directions for further studies are discussed.