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

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 plasma propagation speed with the group velocity in the plasma column of indirect plasma jet has been shown to beabout 120 km/s which corresponding with ion acoustic velocity of 0.8 km/s of plasma exposure atan input discharge voltage various from 1.99 - 4.09 kV and driving frequency of about 40 kHz. Particularly, the electron temperature in atmospheric pressure non-thermal indirect bioplasma jet were found to be about 0.55 eV of the early part of plasma exposure, respectively. Implications of the results and directions for further studies are discussed.